Performance & Stock Valve train components

& cylinder head kits - packages

RPM - RON'S PRECISION MACHINE, INC.
69 E. 580 N.
Santaquin, Utah 84655
1-801-754-5338 or Toll free 1-866-700-5877

Call toll free to purchase at: 1-866-700-5877 (U.S. only) or
Contact us anytime 24-7 to check stock Contact us anytime 24-7
Hours 9-5 Monday-Friday

Order Form
Engine Rebuild Kit and Parts Online Catalog

Engine Rebuild & Assembly Balancing & 
Blueprinting
Cylinder Heads
Engine Rebuild Kits Engine Start-up Other Related Web Sites Page 1
Crankshafts Degree Cam Other Related Web Sites Page 2
Purchase warranty & Return Information About the owner of RPM Frequently Asked Questions
MASTER ENGINE REBUILD KITS & PARTS

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We are distributors for:
for Manley Catalog click here
-
Comp Cams - Crane - Isky - Elgin - Pioneer -

S.I. Industries - PAC - PRW -

PROFORM
- Federal Mogul - and many others.

Engine Pro Valve Springs, Retainers, Rocker Arms, Cylinder head packages

S.I. Sport Compact import car and truck performance valve springs and titanium retainers click here

S.I. Domestic Valve Springs click here

S.I. Domestic Chrome Moly Retainers click here

S.I. Domestic Titanium Retainers click here


Proform Aluminum Roller Rocker Arms - # 66907 SB Chevy 1.5 ratio, 3/8" stud $220.03 set of 16




PAC RACING SPRINGS



Engine Pro Valve Springs, Retainers, Rocker Arms, Cylinder head packages

VALVE SPRINGS - Beehive, Dual & Single
7° & 10° Chrome Moly STEEL VALVE SPRING RETAINERS
10° TITANIUM VALVE SPRING RETAINERS
CHROME-Moly STEEL ROLLER ROCKER ARMS
ALUMINUM ROLLER ROCKER ARMS
Cast Iron Cylinder head packages
Aluminum Cylinder head packages












Engine Pro Nitro Black Beehive Springs
Super Clean Chrome Silicon Vanadium Nickel Alloy

• Beehive shaped design allows a reduced retainer end mass for improved rpm potential
• Every spring goes through a multiple shot peening process to ensure maximum durability and stress relief
• “Heat Set” process and special heat treatment are used to extend spring life and minimize load loss
• Ovate wire shape more evenly distributes mass throughout the wire cross section

 Part # Your Cost  Spring
O.D.
Bottom
 Spring
I.D.
Bottom
Spring
O.D. Top
 
Spring
I.D. Top
 
Closed
Height
 
Closed
Load
 
Open
Height
 
Open
Load
 
Coil
Bind
 
Max.
Lift
Rate   Material
Type*
 
Steel
Retainer
# Your Cost
 
Titanium
Retainer
# Your Cost
  
02-1200-16 $249.01  1.061  0.737  0.960  0.636 1.640  80  1.090  185  1.020   .550 191  Cr- Si -V- Ni  03-1012-16 $57.91    
02-1205-16 $164.01 1.237  0.825  1.062  0.650  1.700  110  1.175  292  1.115  .575  347  Cr- Si -V- Ni 03-1011-16 $57.91   03-1794-16 $376.58
                        03-1013-16 $57.91    
                        03-1014-16 $57.91    
                        03-1015-16 $57.91    
02-1201-16 $326.36 1.292  0.880  1.062  0.650  1.800  135  1.150  330   1.110 .650  300  Cr- Si -V- Ni  03-1011-16 $57.91   03-1794-16 $376.58  
                        03-1013-16 $57.91    
                        03-1014-16 $57.91    
                        03-1015-16 $57.91    
02-1204-16 $209.21  1.292  0.880  1.062  0.650  1.800  105  1.200  298  1.100  .625  322  Cr- Si -V- Ni  03-1011-16 $57.91   03-1794-16 $376.58  
                        03-1013-16 $57.91    
                         03-1014-16 $57.91  
                         03-1015-16 $57.91  
02-1203-16 $292.89   1.412  1.065  1.000  0.650 1.750  123  1.175  284  1.100  .650    Cr- Si -V- Ni     
02-1202-16 $276.15 1.447  0.999  1.098  0.650  1.880  155  1.280  365  1.210  .600  350  Cr- Si -V- Ni  03-1011-16 $57.91   03-1794-16 $376.58  
                        03-1013-16 $57.91    
                        03-1014-16 $57.91    
                        03-1015-16 $57.91    

*MATERIAL TYPE, Cr-Si-V-Ni = Chrome Silicon Vanadium Nickel Alloy

ENGINE PRO Super Clean
Street/Race Valve Springs
Dual Valve Spring Assemblies All Engine Pro valve springs are manufactured using the highest quality chrome silicon or high tensile chrome silicon vanadium alloy materials. Our springs are inspected during the manufacturing process to ensure consistent dimensions and overall quality.

• Every spring goes through a multiple shotpeening
process for maximum durability and stress relief
• “Heat Set” process and special heat treatment are used to
extend spring life and minimize load loss

Part #
Your Cost
Outter
Spring
O.D.
 
Outer
Spring
I.D.
 
Inner
Spring
I.D.
 
Closed
Height
 
Closed
Load
 
 Open
Height
Open
Load
Coil
Bind 
 Max
Lift
Rate  Material
Type *   

Damper

Steel
Retainer
Number

 Titanium
Retainer
Number
02-1023-16 $175.73  1.304 0.940  0.670  1.800  151  1.150  417 
1.080
 
.650   409 Cr- Si- V  N     
02-1301-16 $200.83 1.385   0.995 0.711  1.850  161  1.250  430  1.195  .600  448  Cr-Si  N     
02-1024-16 $142.26 1.388  1.062  0.806  1.600  117  1.100  232  1.000  .600  230  Cr- Si- V  N  03-1003   
02-1010-16 $192.47 1.440  1.076  0.697  1.700  126  1.150  364 1.055  .550  433  Cr-Si  Y  03-1006  03-1730 
02-1003-16 $157.31 1.445  1.085  0.697  1.750  142  1.150  349  1.055  .600  345  Cr-Si  Y  03-1006  03-1730 
02-1004-16 $175.73 1.445  1.085  0.696  1.750  133  1.150  316  1.055  .600  305  Cr-Si  Y  03-1006  03-1730 
02-1300-16 $209.21 1.450  1.060  0.790  1.900  140  1.300  358  1.120  .650  363  Cr-Si  N  03-1003   
02-1011-16 $192.47 1.460  1.060  0.696  1.850  126   1.250 368  1.150  .625  403  Cr-Si  Y  03-1003   
02-1012-16 $209.21 1.515  1.115  0.696  1.900  125  1.200  385  1.165  .725  371  Cr-Si  Y     
02-1015-16 $192.47 1.539  1.125  0.697   1.950 145  1.350  425  1.200  .625  467  Cr-Si   Y 03-1007   
02-1008-16 $192.47 1.539  1.125  0.731  1.900  206  1.250  520  1.200  .650  483  Cr-Si  Y  03-1007  03-1732 
. . . . . . . . . . . . . 03-1008   
02-1009-16 $333.06 1.546  1.134  0.814  1.900  240  1.250  598  1.150  .650  551  Cr- Si- V   N  03-1007  .
. . . . . . . . . . . .   03-1009  .

*MATERIAL TYPE, Cr-Si = Chrome Silicon Alloy. Cr-Si-V= Chrome Silicon Vanadium Alloy

ENGINE PRO Super Clean
Street/Race Valve Springs

Single Valve Springs
• Every spring goes through a multiple shotpeening process
for maximum durability and stress relief
• “Heat Set” process and special heat treatment are used to
extend spring life and minimize load loss

Part #
Your Cost
Outter
Spring
O.D.
 
Inner
Spring
I.D.
 
Closed
Height
 
Closed
Load
 
Open
Height
Open
Load
Coil
Bind
 
 Max
Lift
Rate  Material
Type *   

Damper

 Steel
Retainer
Number

 Titanium
Retainer
Number
02-1000-16 $43.52 1.230  0.876  1.700  91  1.250  233 
1.150
 
.525  316  Cr-Si  03-1000   
                      03-1001   
02-1001-16 $49.37 1.253  0.870  1.700  124  1.210  322  1.160  .490  404  Cr-Si  03-1000   
                      03-1001   
02-1002-16 $73.63 1.259  0.876  1.800  121  1.200  365  1.160  .600  407  Cr-Si  03-1000   
                      03-1001   
02-1016-16 $160.67 1.263  0.880  1.750  150  1.250  367  1.100  .500  434  Cr-Si-V  03-1000   
                      03-1001   
02-1019-16 $165.69 1.354  0.940  1.850  97  1.350  312  1.280  .550  430  Cr-Si     
02-1017-16 $132.22 1.437  1.035  1.700  110  1.200  289  1.060  .550  358  Cr-Si     
02-1020-16 $142.26 1.463  1.080  1.900  100  1.300  252  1.120  .650  253  Cr-Si  03-1006  03-1730 
02-1021-16 $165.69 1.464  1.064  1.800  129  1.250  305  1.135  .550  320  Cr-SI  03-1002   
                      03-1003   
                      03-1005   
                      03-1010   
02-1005-16 $132.22 1.476  1.062  1.800  109  1.300  317  1.140  .525  416  Cr-Si  03-1003   
02-1022-16 $192.47 1.494  1.080  1.650  106  1.250  258  1.100  .525 380   Cr-Si  03-1006 03-1730  
02-1018-16 $160.67 1.500  1.117  1.800  152  1.250  311  1.050  .575  289  Cr-Si-V  03-1004   
                    03-1008   
02-1007-16 $148.95 1.539  1.125  1.900  133  1.400  309  1.170  .625  352  Cr-Si   03-1007   
                      03-1008   
02-1014-16 $125.53 1.548  1.134  1.900  150  1.350  328  1.180  .575  324  Cr-Si  03-1007   
                      03-1008   

*MATERIAL TYPE, Cr-Si = Chrome Silicon Alloy. Cr-Si-V= Chrome Silicon Vanadium Alloy


Engine Pro STEEL VALVE
SPRING RETAINERS
Engine Pro chrome moly steel retainers are designed to handle high pressures developed by new large diameter valve springs. Our retainers are manufactured to precise tolerances to ensure the springs are located properly. Available for 7 degree and 10 degree valve locks.

• 4140 chrome moly steel alloy
• CNC machined
• Heat treated
• Black oxide finish

 

PART # Your Cost  Spring O.D. Spring Height  Keeper Degree  VALVE STEM SIZE  A  B  C
03-1000-16 $57.91 1.250  STD  11/32”  1.245  .865  .680 
03-1001-16 $57.91 1.250  +.050  11/32”  1.245  .865  .680 
03-1017-16 $57.91 1.275/ 1.325  STD  8mm  1.240  .940  .640 
03-1003-16 $57.91 1.437/ 1.550  STD  11/32”  1.440  1.050  .700 
03-1002-16 $57.91 1.437/ 1.550  STD  10  ALL  1.440  1.050  .700 
03-1005-16 $57.91 1.437/ 1.550  STD  3/8”  1.440  1.050  .700 
03-1006-16 $57.91 1.437/ 1.500  STD  10  ALL  1.400  1.060  .690 
03-1004-16 $57.91 1.500/ 1.550  STD  10  ALL  1.437  1.100  .800 
03-1007-16 $57.91 1.500/ 1.550  +.100  10  ALL  1.500  1.115  .690 
03-1008-16 $57.91 1.550  +.100  10  ALL  1.500  1.105  .710 
03-1009-16 $57.91 1.550  +.100  10  ALL  1.500  1.120  .705 
03-1010-16 $57.91 1.437/ 1.550  +.100  11/32”  1.440  1.050  .700 
03-1011-16 $57.91 1.055  STD  8mm  1.030  0.640  BEEHIVE 
03-1012-16 $57.91 .959  STD  STOCK  0.930  0.630  BEEHIVE 
03-1013-16 $57.91 1.055  STD  11/32”  1.030  0.640  BEEHIVE 
03-1014-16 $57.91 1.095  STD  10  ALL  1.050  0.640  BEEHIVE 
03-1015-16 $57.91 * 1.055  STD  8mm  1.030  0.640  BEEHIVE 
03-1016-16 $57.91 1.437/ 1.500  STD  11/32”  1.400  1.030  .690 

* Same as 03-1011 but I.D. is machined for additional valve guide clearance.

Engine Pro 10° TITANIUM
VALVE SPRING RETAINERS
Engine Pro titanium valve spring retainers are engineered to perform under the most extreme conditions and are inspected to ensure precise tolerances.
• Manufactured from 6AL4V titanium alloy

• Made in the USA - your assurance of quailty
• Light weight
• Machined and polished finish
• Call for other sizes and applications

 

PART # Your Cost  Spring O.D.  Spring Type  Valve Stem Size  A  B  C  D
03-1730-16 $376.58  1.437 / 1.500  DOUBLE ALL  1.437  1.065  .700   
03-1731-16 $376.58 1.500 / 1.550  DOUBLE  ALL  1.437  1.100  .800   
03-1732-16 $376.58 1.500 / 1.550  DOUBLE  ALL  1.500  1.110  .710   
03-1733-16 $376.58 1.625  DOUBLE  ALL  1.500  1.180  .765   
03-1736-16 $376.58 1.500 / 1.550  TRIPLE  ALL  1.500  1.135  .835   .635 
03-1739-16 $376.58 1.625  TRIPLE  ALL  1.500  1.180   .870   .635 
03-1735-16 $376.58 * 1.625  TRIPLE  ALL  1.500  1.180  .870 .635  
03-1794-16 $376.58 1.300  BEEHIVE  ALL  1.050  .640  .   

*+.050 installed height over # 03-1739


CHROME-MOLY
STEEL ROLLER ROCKER ARMS
• Made from high grade chrome-moly steel, lighter and three times stronger than aluminum rocker arms
• Trunnion, valve tip roller and shaft made from chrome-moly material, heat treated to insure long life
• Integral push rod seat
• Design allows clearance for most high performance valve springs
• Extra large trunions for better load distribution and wear
• Maximum open spring pressure 800 lbs.
• Laser etched with Engine Pro logo

 

 

 

 APPLICATION  STUD DIA  RATIO  PART # Your Cost
CHEVROLET SMALL BLOCK  3/8”  1.5  07-1100-16 $285.34
 CHEVROLET SMALL BLOCK 7/16”  1.5   07-1101-16 $285.34
 CHEVROLET SMALL BLOCK 3/8”  1.6  07-1102-16 $285.34
 CHEVROLET SMALL BLOCK 7/16”  1.6  07-1103-16 $285.34
 CHEVROLET BIG BLOCK 7/16”  1.72  07-1114-16 $297.55
 FORD SMALL BLOCK 3/8”  1.6  07-1117-16 $285.34
 FORD SMALL BLOCK 7/16”  1.6  07-1118-16 $285.34


ALUMINUM ROLLER ROCKER ARMS

• Made from aircraft grade 7000 series aluminum
• Trunnion, valve tip roller and shaft made from chrome-moly material, heat treated to insure long life
• Integral push rod seat design allows clearance for most high performance valve springs
• Extra large trunions for better load distribution and wear
• Maximum open spring pressure 800 lbs.
• Black anodized finish with engine pro logo

 

 APPLICATION  STUD DIA  RATIO  PART # Your Cost
CHEVROLET SMALL BLOCK  3/8”  1.5  07-1000-16 $358.66
 CHEVROLET SMALL BLOCK 7/16”  1.5   07-1001-16 $358.66
 CHEVROLET SMALL BLOCK 3/8”  1.6  07-1002-16 $358.66
 CHEVROLET SMALL BLOCK 7/16”  1.6  07-1003-16 $358.66
 CHEVROLET BIG BLOCK 7/16”  1.7  07-1014-16 $370.92
 FORD SMALL BLOCK 3/8”  1.6  07-1017-16 $358.66
 FORD SMALL BLOCK 7/16”  1.6  07-1018-16 $358.66


ENGINE PRO
Valve Spring Retainers

Chrome Moly Steel -- Black Oxide Finish
Per 16 Pack
Spg. Type Spg. Dia. Stem Size Inst. Ht. Part #
Your Cost
Single 1.250" 11/32"-7° Stock 03-1000-16 $57.91
Dual 1.437" 11/32"-10° Stock 03-1002-16 $57.91


Valve Locks - 11/32" stem, single groove
Meet or exceed OE Specifications -- Case Hardened
Per 32 Halves
Type Finish/Material Part # Your Cost
7° Stamped Black Oxide 04-1000-32 $20.22
7° Machined Chrome Moly 04-1001-32 $43.10
10º Machined Chrome Moly 04-1002-32 $43.10

Engine Pro Performance Products -
Engine Pro Performance Products feature superior design engineering, and are manufactured to exacting standards using only the highest quality materials. Some parts are not legal for sale or use on emission-controlled motor vehicles.

Racing Push Rods

Designed To Operate With Today's Extreme Spring
Pressures & Radical Cam Profiles

Chevy
5/16" Diameter Competition Series Push Rods
APPLICATION LENGTH Part # Your Cost
SB w/OEM roller cam 7.200 581-7200 $11.78 ea.
SB stock length 7.800 581-7800 $11.78 ea.
SB stock less .050" 7.750 581-7750 $11.78 ea.
SB stock less .100" 7.700 581-7700 $11.78 ea.
SB stock less .150" 7.650 581-7650 $11.78 ea.
SB stock plus .050" 7.850 581-7850 $11.78 ea.
SB stock plus .100" 7.900 581-7900 $11.78 ea.
SB stock plus .150" 7.950 581-7950 $11.78 ea.
SB stock plus .200" 8.000 581-8000 $11.78 ea.


Chrysler
APPLICATION LENGTH Part # Your Cost
SB w/non-adj. rockers 7.500 581-7500 $11.78 ea.
SB w/non-adj. rockers -stock plus .050" 7.550 581-7550 $11.78
BB w/non-adj. rockers -stock plus .050" 8.600 581-8600 $11.78 ea.


Ford
APPLICATION LENGTH Part # Your Cost
Ford 302 6.800 581-6800 $11.78 ea.
69-78 351W 8.150 581-8150 $11.78 ea.
72-78 429-460 stock plus .050" 8.600 581-8600 $11.78 ea.


3/8" Diameter Competition Series Push Rods
\Chevy
APPLICATION LENGTH Part # Your Cost
SB stock length 7.800 381-7800 $14.87 ea.
BB stock length (intake) 8.250 581-8250 $11.78 ea.
BB stock length (exhaust) 9.250 381-9250 $14.87 ea.
BB stock plus .100" (intake) 8.350 381-8350 $14.87 ea.
BB stock plus .100" (exhaust) 9.350 381-9350 $14.87 ea.
BB w/tall deck (intake) 8.650 381-8650 $14.87 ea.
BB w/tall deck (exhaust) 9.650 381-9650 $14.87 ea.


Ford
APPLICATION LENGTH Part # Your Cost
69-71 429-460 stock length 8.700 381-8700 $14.87 ea.
72-78 429-460 stock length 8.850 381-8550 $14.87 ea.

Other sizes are available from 6" to 11" in .050" increments!
Oil-Restricted push rods (.040") are also available.

|Engine Pro Performance Products -
  • Engine Pro Performance Products feature superior design engineering, and are manufactured to exacting standards using only the highest quality materials. Some parts are not legal for sale or use on emission-controlled motor vehicles. Performance Guide Plates



Racing Guide Plates



ENGINE PRO CYLINDER HEAD PACKAGES FOR SBC (Small block Chevy)

Cast Iron Head Packages Valves are all swirl polished stainless steel

.500 Max Lift Valvetrain Kit Part  # VT500C $221.79

Valvetrain Package includes:
8 - 2.020” “Street Series” Intake Valves
8 - 1.600” “Street Series” Exhaust Valves
1 Set Valve Springs: 1.250” OD 110# @ 1.700 285# @ 1.210 .500 Max Lift
16 - 7° Moly Retainers
1 - Set 7° HD Valve Keepers
1 - Set 3/8” Screw In Studs
1 - Set 5/16” Guideplates
Option: 2.055” Intake Valves Option: 2.080” Intake Valves + $35.00 extra.

.550 Max Lift Valvetrain Kit Part # VT550C $263.21
Valvetrain Package includes:
8 2.020” “Street Series” Intake Valves #01-1003 $15.57
OR
Option: 2.055” Intake Valves #01-1007 $17.59
OR
Option: 2.080” Intake Valves #01-1008 $17.59
8 1.600” “Street Series” Exhaust Valves #01-1001 $15.63
1 Set Valve Springs: 1.250” OD 110# @ 1.800 325# @ 1.200 .550 Max Lift #02-1002-16 $73.63
16 7° Moly Retainers #03-1000-16 $57.91
1 Set 7° HD Valve Keepers #04-1000-32 $20.22
1 Set 3/8” Screw In Studs #06-1100-16 $40.58
1 Set 5/16” Guideplates #05-1000-8 $23.21

.630 Max Lift Valvetrain Kit Part # VT630C $331.08
Valvetrain Package includes:
8 2.020” “Street Series” Intake Valves Option: 2.055” Intake Valves Option: 2.080” Intake Valves
8 1.600” “Street Series” Exhaust Valves
1 Set Valve Springs: 1.437” OD 141# @ 1.750 334# @ 1.150 .630 Max Lift
16 10° Moly Retainers 1 Set
10° HD Valve Keepers
1 Set 7/16” Screw In Studs
1 Set 5/16” Guideplates


640 Max Lift Valvetrain Kit Part # VT640C $338.66
Valvetrain Package includes:
8 2.020” “Street Series” Intake Valves Option: 2.055” Intake Valves Option: 2.080” Intake Valves
8 1.600” “Street Series” Exhaust Valves
1 Set Valve Springs: 1.437” OD 135# @ 1.750 307# @ 1.150 .640 Max Lift
16 7° Moly Retainers 1 Set
7° HD Valve Keepers
1 Set 7/16” Screw In Studs
1 Set 5/16” Guideplates


.700 Max Lift Valvetrain Kit Part # VT700C $483.03
Valvetrain Package includes:
8 2.020” “Street Series” +.100 Intake Valves Option: 2.055” Intake Valves Option: 2.080” Intake Valves
8 1.600” “Street Series” +.100 Exhaust Valves
1 Set Valve Springs: 1.540” OD 194# @ 1.950 579# @ 1.250 .700 Max Lift
16 10° Moly Retainers
1 Set 10° HD Valve Keepers
1 Set 7/16” Screw In Studs
1 Set 5/16” Guideplates


ENGINE PRO
ALUMINUM CYLINDER HEAD PACKAGES
Aluminum Head Packages Valves are all swirl polished stainless steel
.500 Max Lift Valvetrain Kit Part # VT500A $266.99

Valvetrain Package includes:
8 2.020” “Street Series” Intake Valves Option: 2.055” Intake Valves Option: 2.080” Intake Valves
8 1.600” “Street Series” Exhaust Valves
1 Set Valve Springs: 1.250” OD 110# @ 1.700 285# @ 1.210 .500 Max Lift
16 7° Moly Retainers
1 Set 7° HD Valve Keepers

1 Set 3/8” Screw In Stud
1 Set 5/16” Guideplates
1 Set Spring Cups (Aluminum Only)

.550 Max Lift Valvetrain Kit Part # VT550A $306.26
Valvetrain Package includes:
8 2.020” “Street Series” Intake Valves Option: 2.055” Intake Valves Option: 2.080” Intake Valves
8 1.600” “Street Series” Exhaust Valves
1 Set Valve Springs: 1.250” OD 110# @ 1.800 325# @ 1.200 .550 Max Lift
16 7° Moly Retainers
1 Set 7° HD Valve Keepers
1 Set 3/8” Screw In Studs
1 Set 5/16” Guideplates
1 Set Spring Cups (Aluminum Only)


.630 Max Lift Valvetrain Kit Part # VT630A $364.40
Valvetrain Package includes:
8 2.020” “Street Series” Intake Valves Option: 2.055” Intake Valves Option: 2.080” Intake Valves
8 1.600” “Street Series” Exhaust Valves
1 Set Valve Springs: 1.437” OD 141# @ 1.750 334# @ 1.150 .630 Max Lift
16 10° Moly Retainers
1 Set 10° HD Valve Keepers
1 Set 7/16” Screw In Studs
1 Set 5/16” Guideplates
1 Set Spring Cups (Aluminum Only)


.640 Max Lift Valvetrain Kit Part # VT640A $363.46
Valvetrain Package includes:
8 2.020” “Street Series” Intake Valves Option: 2.055” Intake Valves Option: 2.080” Intake Valves
8 1.600” “Street Series” Exhaust Valves
1 Set Valve Springs: 1.437” OD 135# @ 1.750 307# @ 1.150 .640 Max Lift
16 7° Moly Retainers
1 Set 7° HD Valve Keepers
1 Set 7/16” Screw In Studs
1 Set 5/16” Guideplates
1 Set Spring Cups (Aluminum Only)


.700 Max Lift Valvetrain Kit Part # VT700A $511.22
Valvetrain Package includes:
8 2.020” “Street Series” +.100 Intake Valves Option: 2.055” Intake Valves Option: 2.080” Intake Valves
8 1.600” “Street Series” +.100 Exhaust Valves
1 Set Valve Springs: 1.540” OD 194# @ 1.950 579# @ 1.250 .700 Max Lift
16 10° Moly Retainers
1 Set 10° HD Valve Keepers
1 Set 7/16” Screw In Studs
1 Set 5/16” Guideplates
1 Set Spring Cups (Aluminum Only)



PAC RACING SPRINGS -
A Peterson American Company

DRAG RACE SPRINGS

1200 SERIES PAC’s standard HP processing without sacrificing performance

Spring Diameters

Spring Loads

Recommended Matching Components


Part
Number

OD
Outer


ID
Outer


ID
Middle


ID Inner

Installed Height (Valve Closed)


Open Load (Valve Open)


Spring Rate


Coil Bind

Max
Lift

400
Series
Retainers
((each))


500 Series Retainers
((each))


600 Series Retainers
((each))



Spring Seats
((each))


Spring Cups
((each))



Comments
PAC1224-16 $487.87 1.625 1.175 N/A 0.851 275 @ 2.000 810 @ 1.150

629
1.100 0.850 PAC-R404 $21.90 PAC-R504 $35.94

N/A

PAC-S101 $6.68 PAC-S102 $6.68
PAC-C205 $0.00 Dual Drag Race Spring - Bracket Race applications
PAC1228-16 $505.12 1.625 1.175 N/A 0.851 280 @ 2.100 847 @ 1.150

629
1.100 0.900 PAC-R404 $21.90 PAC-R504 $35.94

N/A
PAC-S101 $6.68 PAC-C205 $0.00 Dual Drag Race Spring - Bracket Race applications with
PAC1225-16 $487.87 1.550 1.100 N/A 0.788 250 @ 2.000 765 @ 1.200

644
1.150 0.800 PAC-R405 $21.90 PAC-R505 $35.94

N/A
PAC-S103 $6.68 PAC-C204 $0.00 Smaller Diameter Dual Drag Race Spring
- - - - - - - - - - - - - - - PAC-R556 $35.94 - PAC-S104 $6.68 - -
PAC1226-16 $487.87 1.550 1.100 N/A 0.706 275 @ 2.000 805 @ 1.200

663
1.150 0.800

N/A
PAC-R506 $35.94 PAC-R606 $29.19 PAC-S105 $6.68 PAC-C204 $0.00 -
- - - - - - - - - - - - - - - PAC-R541 $35.94 PAC-R641 $29.19 PAC-S106 $6.68 - Smaller Diameter Dual Drag Race Spring with a Damper
- - - - - - - - - - - - - - - - PAC-R661 $29.19 PAC-S139X $29.51 - -
PAC1298-16 $0.00 1.625 1.175 N/A 0.769 250 @ 2.000 648 @ 1.300

564
1.210 0.700

N/A
PAC-R507 $35.94

N/A

PAC-S107 $6.68

PAC-S108 $6.68

PAC-C205 $0.00 Dual Drag spring with a damper for lower lift applications
PAC1299-16 $0.00 1.625 1.175 N/A 0.769 250 @ 2.050 673 @ 1.300

564
1.210 0.750

N/A
PAC-R507 $35.94

N/A

PAC-S107 $6.68

PAC-S108 $6.68

PAC-C205 $0.00 Dual Drag spring with a damper for lower lift applications
PAC1246-16 $569.18 1.645 1.195 0.871 0.635 250 @ 2.050 801 @ 1.250

689
1.130 0.800 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Bracket Race Applications
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 - - -
PAC1247-16 $569.18 1.645 1.195 0.871 0.635 290 @ 2.070 835 @ 1.270

682
1.130 0.800 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Bracket Race Applications
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 - - -
PAC1248-16 $569.18 1.645 1.195 0.871 0.635 332 @ 2.100 950 @ 1.200

687
1.130 0.900 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Bracket Race Applications
- - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 - - -
PAC1258-16 $569.18 1.645 1.195 0.871 0.635 350 @ 2.150 1004 @ 1.200

688
1.130 0.950 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Bracket Race Applications
- - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 - - -
PAC1249-16 $569.18 1.645 1.195 0.871 0.635 375 @ 2.200 1064 @ 1.200

689
1.130 1.000 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - High Lift / Top Fuel
- - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 - - applications
PAC1250-16 $449.19 1.645 1.195 0.871 0.635 440 @ 2.200 1129 @ 1.200

689
1.130 1.000 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - High Lift / Top Fuel applications
- - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 - - -

DRAG RACE SPRINGS
1300 SERIES Premium processed with Nano-PeenTM spring technology for enhanced durability and exotic heat treatment for minimal load loss

Spring Diameters

Spring Loads

Recommended Matching Components


Part
Number

OD
Outer


ID
Outer


ID
Middle


ID Inner

Installed Height (Valve Closed)


Open Load (Valve Open)


Spring Rate


Coil Bind

Max
Lift

400
Series
Retainers
(each)


500 Series Retainers
(each)


600 Series Retainers
(each)

 

Spring Seats
(each)


Spring Cups
(each)



Comments
PAC1324-16 $712.10 1.625 1.175 N/A 0.851 275 @ 2.000 810 @ 1.150

629
1.100 0.850 PAC-R404 $21.90 PAC-R504 $35.94

N/A

PAC-S101 $6.68 PAC-S102 $6.68
PAC-C205 $0.00 Dual Drag Race Spring - Bracket / high lift applications
PAC1328-16 $546.84 1.625 1.175 N/A 0.851 280 @ 2.100 847 @ 1.150

629
1.100 0.900 PAC-R404 $21.90 PAC-R504 $35.94

N/A

PAC-S101 $6.68 PAC-S102 $6.68
PAC-C205 $0.00 Dual Drag Race Spring - Bracket / high lift applications
PAC1325-16 $712.10 1.550 1.100 N/A 0.788 250 @ 2.000 765 @ 1.200

644
1.150 0.800 PAC-R405 $21.90 PAC-R505 $35.94

N/A
PAC-S103 $6.68 PAC-C204 $0.00 Smaller Diameter Dual Drag Race Spring
- - - - - - - - - - - - - - - PAC-R556 $35.94 - PAC-S104 $6.68 - -
PAC1326-16 $712.10 1.550 1.100 N/A 0.706 275 @ 2.000 805 @ 1.200

663
1.150 0.800

N/A
PAC-R506 $35.94 PAC-R606 $29.19 PAC-S105 $6.68 PAC-C204 $0.00 Smaller Diameter Dual Drag Race Spring with a Damper
- - - - - - - - - - - - - - - PAC-R541 $35.94 PAC-R641 $29.19 PAC-S106 $6.68 - -
- - - - - - - - - - - - - - - - PAC-R661 $29.19 PAC-S139X $29.51 - -
PAC1346 1.645 1.195 0.871 0.635 250 @ 2.050 801 @ 1.250

689
1.130 0.800 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Bracket Race Applications
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 PAC-S133 $6.68 - -
PAC1347-16 $683.55 1.645 1.195 0.871 0.635 290 @ 2.070 835 @ 1.270

682
1.130 0.800 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Bracket Race Applications
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 PAC-S133 $6.68 - -
PAC1348-16 $841.46 1.645 1.195 0.871 0.635 332 @ 2.100 950 @ 1.200

687
1.130 0.900 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Bracket Race Applications
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 PAC-S133 $6.68 - -
PAC1358-16 $841.46 1.645 1.195 0.871 0.635 350 @ 2.150 1004 @ 1.200

688
1.130 0.950 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Bracket Race Applications
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 PAC-S133 $6.68 - -
PAC1349-16 $841.46 1.645 1.195 0.871 0.635 375 @ 2.200 1064 @ 1.200

689
1.130 1.000 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - High Lift / Bracket Race
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 PAC-S133 $6.68 - Applications
PAC1350-16 $841.46 1.645 1.195 0.871 0.635 440 @ 2.200 1129 @ 1.200

689
1.130 1.000 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Pro Stock / Top Fuel applications
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 PAC-S133 $6.68 - -
PAC1351-16 $991.76 1.667 1.195 0.871 0.635 450 @ 2.300 1240 @ 1.250

752
1.160 1.050 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Pro Stock / Top Fuel applications
- - - - - - - - - - - - - - PAC-R402 $21.90 PAC-R502 $35.94 PAC-R602 $0.00 PAC-S133 $6.68 - -
PAC1351H $56.15 each 1.667 1.195 - 0.635 525 @ 2.300 1315 @ 1.250

752
1.160 1.050 PAC-R401 $21.90 PAC-R501 $37.06 PAC-R601 $0.00 PAC-S109 $6.68 PAC-C206 $0.00 Triple Drag Race Spring - Pro Stock / Top Fuel applications

 

DUAL DRAG RACE VALVE SPRINGS

 
















  • These springs feature a 15-30% reduction in physical mass!
  • This coupled with a natural frequency increase of 20% means that your engine will rev higher,
    faster and last longer with more aggressive valve motion.
  • Get the performance of Titanium with improved life and cost of steel directly from the spring manufacturer.

PAC Racing Springs has brought the latest technology to the Drag Racing Market. Traditional springs were made with higher load and rates without concern of spring mass and frequency. PAC Racing Springs has taken years of research and coupled that with exotic new heat treatment methods | to produce the next generation drag race springs.

 Spring Diameters

Spring Loads

 Recommended Matching Components

 


Part #
Your Cost

 


OD
Outer

 


ID
Outer

 


ID
Middle

 


ID Inner


Installed
Height
(Valve Closed)

 


Open Load (Valve Open)

 


Spring Rate



Max
Coil Bind

 


Max
Lift


400
Series
Retainers
(each)


500
Series
Retainers
(each)


Mini 8
Degree
Retainers
(each)


600
Series
Retainers
(each)

 


Spring Seats ea.

 


Spring Cups
(each)

 

 

Comments
PAC1312-16 $703.08 1.106 0.810 NA 0.574 150 @ 1.700 430 @ 1.000

400
0.700 0.800 PAC-R439 $21.90

NA

NA

NA
PAC-S132 $6.68

NA
Ford 4V Drag Spring
PAC1335-16 $703.08 1.300 0.900 N/A 0.616 250 @ 1.800 860 @ 1.050

813
0.985 0.800 PAC-R432 $21.90 PAC-R532 $35.94 PAC-R532 $35.94 PAC-R632 $29.19 PAC-S128 $6.68

NA
Very Small diameter drag race valve spring for high lift LS style engines. Very lightweight spring
- - - - - - - - - - - - - - - - PAC-R632 $29.19 - PAC-138 - for very aggressive valvetrains - Very high RPM
PAC1354-16 $703.08 1.550 1.050 N/A 0.726 425 @ 2.300 1440 @ 1.300 1015 1.230 1.000

NA
PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C204 $0.00 High Lift Dual Drag Race Spring - Very high rate springs for very aggressive valve trains
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - - very high RPM potential
PAC1355-16 $703.08 1.500 1.050 N/A 0.726 420 @ 2.175 1200 @ 1.175

780
1.130 1.000

NA
PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C202 $0.00 High Lift Dual Drag Race Spring - Works
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - well in TAFC and Pro-Mod alcohol Engines
PAC1355H $48.28 each 1.500 1.050 N/A 0.726 440 @ 2.200 1220 @ 1.200

780
1.130 1.000

NA
PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C202 $0.00 High Lift Dual Drag Race Spring - Works
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - well in TAFC and Pro-Mod alcohol Engines
PAC1330-16 $848.85 1.500 1.050 N/A 0.726 275 @ 2.050 938 @ 1.200

780
1.130 0.850 PAC-R408 $21.90 PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C202 $0.00 High Lift Dual Drag Race Spring - great
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - spring for Comp, superstock engines
PAC1331-16 $848.85 1.514 1.050 N/A 0.726 425 @ 2.200 1288 @ 1.200

863
1.160 1.000

NA
PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C203 $0.00 High Lift Dual Drag Race Spring - Very high rate springs for very aggressive valvetrains -
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - very high RPM potential
PAC1332-16 $703.08 1.514 1.050 N/A 0.726 350 @ 2.100 1127 @ 1.200

863
1.160 0.900 PAC-R408 $21.90 PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C203 $0.00 High Lift Dual Drag Race Spring - great
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - spring for Comp, superstock engines
PAC1356-16 $848.85 1.500 1.050 N/A 0.726 300 @ 2.100 1002 @ 1.200

780
1.130 0.900 PAC-R408 $21.90 PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C202 $0.00 High Lift Dual Drag Race Spring - great spring for Comp,
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - superstock engines
PAC1329-16 $703.08 1.500 1.050 N/A 0.726 350 @ 2.100 1052 @ 1.200

780
1.130 0.900 PAC-R408 $21.90 PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C202 $0.00 High Lift Dual Drag Race Spring - great
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - spring for Comp, superstock engines
PAC1357-16 $703.08 1.500 1.050 N/A 0.726 375 @ 2.150 1116 @ 1.200

780
1.130 0.950 PAC-R408 $21.90 PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C202 $0.00 High Lift Dual Drag Race Spring - great
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - spring for Comp, superstock engines
PAC1359-16 $703.08 1.522 1.050 N/A 0.726 375 @ 2.200 1200 @ 1.300

895
1.190 0.900

NA
PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C203 $0.00 High Lift Dual Drag Race Spring - Works
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - well in TAFC and Pro-Mod alcohol Engines
PAC1360-16 $703.08 1.522 1.050 N/A 0.726 400 @ 2.250 1252 @ 1.300

895
1.190 0.950

NA
PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C203 $0.00 High Lift Dual Drag Race Spring - Works
- - - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - well in TAFC and Pro-Mod alcohol Engines
PAC1361-16 $703.08 1.536 1.050 N/A 0.726 425 @ 2.300 1389 @ 1.300

964
1.215 1.000

NA
PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C203 $0.00 High Lift Dual Drag Race Spring
- - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - -
PAC1361H $48.28 each 1.536 1.050 N/A 0.726 491@ 2.300 1455 @ 1.300

964
1.215 1.000

NA
PAC-R508 $45.58 PAC-R544 $35.94 PAC-R608 $29.19 PAC-S110 $6.68 PAC-C203 $0.00 Higher Load Version of PAC-1361
- - - - - - - - - - - - - - PAC-R509 $35.94 PAC-R644 $29.19 PAC-R609 $29.19 PAC-S126 $6.68 - -
PAC1369 1.635 1.125 N/A 0.785 550@ 2.350 1535 @ 1.300

938
1.230 1.050

NA
PAC-R566 $0.00

NA

NA

PAC-S103 $6.68

PAC-S104 $6.68

NA
High Lift High Rate Dual Drag Race Spring
PAC1370-16 $703.08 1.550 1.065 N/A 0.740 555@ 2.350 1433 @ 1.300

836
1.230 1.050

N/A
PAC-R547 $35.94

NA

N/A

PAC-S110 $6.68 PAC-S126 $6.68

NA
High Lift Dual Drag Race Spring
PAC1376 1.465 0.990 Damper 0.590 410@ 2.400 1500 @ 1.300

990
1.240 1.075

NA

NA
PAC-R660 $0.00 PAC-R660 $0.00

NA
PAC-C213X Dual High RPM Drag Race Spring Dampered Spring Requires Steel Retainers and Mini 8 Locks

HOT ROD - SINGLE SPRING WITH DAMPER

________________ __________ ___________________________

Spring Diameters

Spring Loads

Recommended Matching Components
 Part #
Your Cost
 Spring Type  OD
Outer
 ID
Outer
 Damper  ID Inner  Installed
Height
(Valve Closed)
 Open Load (Valve Open)  Spring Rate  Spring
Retainer
PN ea.
 0.570
Seat
PN
 0.630
Seat
PN
 Max
Coil Bind
 Max
Lift
 Comments and
Application
Recommendations
PAC1900-16 $174.94

Single Std.
1.500 1.086

Y
0.996

98 @ 1.880
316 @ 1.300 376 PAC-R378 $6.17 PAC-S149 PAC-S150 1.115 0.600 AMC and BBC Street
PAC1902-16 $87.89

BEEHIVE
1.254 0.880

N
0.790 120 @ 1.940 375 @ 1.380 455 PAC-R382 $6.17 PAC-S169 PAC-S170 1.316 0.575 SBC BEEHIVE Hyd roller/ Flat tappet
PAC1909-16 $62.99

Single Std.
1.255 0.871

Y
0.781 110 @ 1.700 311 @ 1.200 402 PAC-R382 $6.17 PAC-S171 PAC-S172 1.150 0.500 SBC Street and truck
PAC1911-16 $0.00

Single Std.
1.265 0.865

Y
0.765 125 @ 1.750 388 @ 1.250 526 PAC-R382 $6.17 PAC-S173 PAC-S174 1.150 0.600 Single W/Damper for SBC Hyd Roller,
LT1 and NMCA
PAC1913-16 $0.00

Single Std.
1.355 0.940

Y
0.851

90 @ 1.850
300 @ 1.350 418 PAC-R381 $0.00 PAC-S167 PAC-S168 1.200 0.550 Hyd Flat tappet
PAC1915-16 $0.00

Single Std.
1.430 1.066

Y
0.976 110 @ 1.750 225 @ 1.250 230 PAC-R379 $0.00 PAC-S157 PAC-S158 1.125 0.600 Hyd Flat tappet
PAC1917-16 $93.50

Single Std.
1.437 1.037

Y
0.947

115 @ 1.700
285 @ 1.200 340 PAC-R380 $0.00 PAC-S165 PAC-S166 1.150 0.500 Small Block Hyd Flat tappet
PAC1919-16 $0.00

Single Std.
1.437 1.073

Y
1.003 115 @ 1.500 240 @ 1.030 266 PAC-R379 $0.00 PAC-S155 PAC-S156 0.900 0.500 Hyd Flat tappet
PAC1921-16 $117.18

Single Std.
1.460 1.060

Y
0.970 109 @ 1.850 293 @ 1.250 307 PAC-R379 $0.00 PAC-S161 PAC-S162 1.145 0.600 Hyd Flat tappet
PAC1923-16 $0.00

Single Std.
1.460 1.060

Y
0.970

92 @ 1.580
296 @ 1.100 425 PAC-R379 $0.00 PAC-S163 PAC-S164 1.050 0.500 Pontiac V-8, Ford GT40
PAC1925-16 $0.00

Single Std.
1.464 1.080

Y
0.990

95 @ 1.900
236 @ 1.300 235 PAC-R378 $6.17 PAC-S153 PAC-S154 1.190 0.600 Hyd Flat tappet
PAC1927-16 $0.00

Single Std.
1.476 1.062

Y
0.972 110 @ 1.800 318 @ 1.300 416 PAC-R379 $0.00 PAC-S159 PAC-S160 1.170 0.550 Hyd Flat tappet
PAC1929-16 $0.00

Single Std.
1.495 1.081

Y
0.991 101 @ 1.650 253 @ 1.220 355 PAC-R378 $6.17 PAC-S151 PAC-S152 1.100 0.450 Hyd Flat tappet
PAC1931-16 $47,598.26

Single Std.
1.525 1.110

Y
1.000 127 @ 1.900 311 @ 1.400 368 PAC-R377 $6.17 PAC-S147 PAC-S148 1.110 0.600 Hyd Flat tappet
PAC1933-16 $117.18

Single Std.
1.540 1.125

Y
1.016 145 @ 1.900 320 @ 1.338 311 PAC-R377 $6.17 PAC-S145 PAC-S146 1.200 0.600 Hyd Flat tappet

HOT ROD DUAL VALVE SPRINGS

Spring Diameters

Spring Loads

Recommended Matching Components
Part #
Your Cost
Type
OD
Outer

ID
Outer
Damper
ID Inner
Installed Height (Valve Closed)
Open Load (Valve Open)
Rate
Retainer
PN ea.

Seat
PN ea.

Seat
PN ea.

Coil Bind
Lift
Application
Recommendations
PAC1904-16 $268.58 Dual 1.290 0.950 N 0.694" Lbs.@ 1.800" Lbs.@1.125" 370 PAC-R335 $6.17 PAC-S135 $6.68

NA
1.010 0.625 LS Dual Spring
PAC1905-16 $285.82 Dual 1.304 0.950 N 0.694" Lbs@1.800" Lbs.@1.125" 392 PAC-R335 $6.17 PAC-S135 $6.68

NA
1.020 0.650 LS Dual Spring
PAC1906-16 $136.71 Dual 1.112 0.900 N 0.674"

Lbs.@1.516"
Lbs.@0.970" 291 PAC-R392 $6.17 PAC-S201 PAC-S202 0.850 0.550 Buick V-6 and Buick 350
PAC1903-16 $146.48 Dual 1.459 1.075 N 0.794" Lbs.@1.875" Lbs.@1.175" 391 PAC-R391 $6.17 PAC-S199 $1.92 PAC-S200 1.050 0.700 Ford, GM and
Mopar BB Hyd
Roller, Solid Flat
Tappet Race
PAC1908-16 $205.74 Dual 1.465 1.090 N 0.807" Lbs. @1.688" Lbs.@1.208" 417 PAC-R389 $6.17 PAC-S195 $1.92 PAC-S196 $2.90 0.910 0.650 Cyl AMC,
Buick V-8 and
Other Short
Installed Height
Applications
PAC1912-16 $0.00 Dual 1.464 1.080 Y

 

0.724"

Lbs.@1.900" Lbs.@1.300" 333 PAC-R390 $0.00 PAC-S197 $2.71 PAC-S198 $1.99 1.200 0.600 Hyd Flat tappet
PAC1914-16 $136.71 Dual 1.490 1.105 N 0.810" Lbs.@1.800" Lbs.@1.200" 367 PAC-R388 $6.17 PAC-S193 $2.71 PAC-S194 $1.99 1.075 0.600 Hyd Roller
PAC1916-16 $194.66 Dual 1.538 1.140 Y 0.752" Lbs.@1.850" Lbs.@1.200" 436 PAC-R387 $6.17 PAC-S187 $1.92 PAC-S188 $2.90 1.090 0.650 Hyd Roller
PAC1918-16 $341.78 Dual 1.545 1.130 Y 0.737" Lbs.@1.800" Lbs.@1.175" 507 PAC-R387 $6.17 PAC-S191 $1.92 PAC-S192 $2.90 1.130 0.625 Solid Flat Tappet and Hyd Roller
PAC1924-16 $316.62 Dual 1.540 1.140 Y 0.754" Lbs.@1.900" Lbs.@1.300" 431 PAC-R387 $6.17 PAC-S183 $2.71 PAC-S184 $2.90 1.125 0.650 BB Hyd Roller
PAC1901-16 $224.60 Dual 1.540 1.140 Y 0.754" Lbs.@1.900" Lbs.@1.250" 492 PAC-R387 $6.17 PAC-S185 $2.71 PAC-S186 $1.99 1.130 0.650 BB Hyd Roller,
Marine and Solid Flat Tappet
PAC1934-16 $0.00 Dual 1.550 1.150 Y 0.790" Lbs.@1.880" Lbs.@1.250" 363 PAC-R386 $0.00 PAC-S181 $1.92 PAC-S182 $1.99 1.140 0.650 Flat Tappet Circle
Track and Street Roller
PAC1940-16 $341.78 Dual 1.555 1.140 Y 0.747" Lbs.@1.950" Lbs.@1.300" 469 PAC-R387 $6.17 PAC-S189 $2.71 PAC-S190 $1.99 1.150 0.700 Solid Flat Tappet and Hyd Roller
PAC1944-16 $0.00 Dual 1.620 1.170 N 0.846" Lbs.@1.950" Lbs.@1.200" 640 PAC-R385 $0.00 PAC-S179 PAC-S180 1.045 0.800 Solid Roller Drag and Circle Track
PAC1948-16 $0.00 Dual 1.635 1.185 Y 0.779" Lbs.@1.900" Lbs.@1.200" 682 PAC-R384 $0.00 PAC-S177 PAC-S178 1.090 0.700 Solid Roller Drag and Circle Track
PAC1950-16 $341.78 Dual 1.645 1.195 N 0.871" Lbs.@2.050" - - - - - - - Solid Roller Drag

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