Engine Quest
New Bare & Fully Loaded Cylinder Heads -
Domestic & Import
Performance Small Block Chevrolet heads

RPM - RON'S PRECISION MACHINE, INC.
69 E. 580 N.
Santaquin, Utah 84655
1-801-754-5338 or Toll free 1-866-700-5877 Contact us anytime 24-7
Hours 9-5 Monday-Friday

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Another section of cylinder heads below:
Misc. Domestic & Import New Cylinder Heads (except where noted)   = BMW, Chrysler, Cummins, Mitsubishi, Ford, GM, Hyundai, Isuzu, Jeep, Mazda, Nissan, Saab, Toyota, Volkswagen, Volvo




NEW CYLINDER HEADS - Flow numbers for cylinder heads


NEW! EQ now offers bare and fully loaded cylinder heads!
All EQ cylinder heads outperform their competitors—whether you need stock or performance heads.

• EQ Bare heads are ready to install to the drive train…no porting or polishing needed!
• EQ Loaded heads include OE-quality stainless steel valves, seals, valve springs and retainers.
• The highest grade cast iron and aluminum
• Redesigned water flow for greater THERMAL CONDUCTIVITY
• Racing technology used for development
• Thicker deck for greater strength
• Hardened exhaust seats
• Improved design to resist cracking
• 25 point quality check on every head
• CNC machined guides and seats
• Backed by our reputation
• Superior port finish for increased flow
• 3 angle valve finish
(ASSEMBLED if noted = complete head)
Priced each (for one cylinder head) Most heads are bare, no valves, etc. unless noted.

AMC /JEEP
PART #
Your Cost		 CID LITER YEARS NOTES
CH150N $452.03 150 2.5 1987 - 2002 REPLACES CASTING NUMBERS: 2403, 117
1/2’ HEAD BOLT
CH150NA $635.46 150 2.5 1987 - 2002 REPLACES CASTING NUMBERS: 2403, 117
1/2’ HEAD BOLT ASSEMBLED
CH226LN $517.87 225 3.7 2002 - 2004 LEFT HEAD / DRIVERS SIDE, REPLACES CASTING NUMBERS: 53020983, 53020983AB WITH EGR HOLE. BLOCK-OFF KIT INCLUDED
CH226RN $517.87 225 3.7 2002 - 2004 RIGHT HEAD / PASSENGER SIDE,REPLACES CASTING NUMBERS: 53020984, 53020984AB
CH227LN $517.87 225 3.7 2005 - 2012 LEFT HEAD / DRIVERS SIDE, REPLACES CASTING NUMBERS: 53020983AD, 53020983AC WITH EGR HOLE. BLOCK-OFF KIT INCLUDED
CH227RN $517.87 225 3.7 2005 - 2012 RIGHT HEAD / PASSENGER SIDE, REPLACES CASTING NUMBERS: 53020984AC
CH242N $730.74 242 4.0 1998 - 2006 331 CASTING
CH242NA $914.02 242 4.0 1998 - 2006 331 CASTING - ASSEMBLED
CH281LN $569.70 287 4.7 1999 - 2008 LEFT HEAD / DRIVERS SIDE, REPLACES CASTING NUMBERS: 53020801AC, 53020803
CH281RN $569.70 287 4.7 1999 - 2008 RIGHT HEAD / PASSENGER SIDE, REPLACES CASTING NUMBERS: 53020802, 53020804
CH318A $481.40 318 5.2 1992 - 2003 REPLACES CASTING NUMBERS: 53005714, 53006671, 53020466, 53020468 172CC INTAKE RUNNER - 62CC COMBUSTION CHAMBER
CH318AA $670.54 318 5.2 1992 - 2003 REPLACES CASTING NUMBERS: 53005714, 53006671, 53020466, 53020468 172CC INTAKE RUNNER - 62CC COMBUSTION CHAMBER , ASSEMBLED



Chevrolet
Chevrolet - (ASSEMBLED if noted = complete head)
Priced each (for one cylinder head) Most heads are bare, no valves, etc. unless noted.


 Part #
Your Cost		  LITERS  CID  YEARS CASTING NOTES  VALVE
SIZE
INTAKE  		 VALVE
SIZE
EXHAUST		 INSTALLED
VALVE
HEIGHT INTAKE		 INSTALLED
VALVE
HEIGHT EXHAUST
CH134N $528.99 2.2   134   90–97  391, 391S 7mm valve guide ID  1 .732”  1.457”  1.9110–1.9400”  1.9350–1.9650” 
CH134NA $740.47 2.2 134 90-97 1990 - 1997 391 / 391S - ASSEMBLED - - - -
CH151N $302.20 2.5 151 89-91 10044642 CAST IRON - - - -
CH305A $410.97 5.0   305  96–00  12552520, 12557113, 12558059 (170cc /58cc )  1.94”  1.500”   1.970–2.000” 1.970–2.000” 
CH305B $481.40 5.0  305  96–00   12552520, 12557113, 12558059 (170cc /58cc) ANGLE SPARK PLUG 1.84”  1.500”   1.970–2.000” 1.970–2.000” 
CH305BA $659.25 5.0 305 1996 - 2002 REPLACES CASTING NUMBERS:12552520, 12557113, 12558059,
INTAKE RUNNER 170CC, COMBUSTION CHAMBER 58CC, ANGLE SPARK PLUG
ASSEMBLED		 1.84”  1.500”   1.970–2.000” 1.970–2.000” 
CH350A $481.40 5.7  350  55–86  UNIVERSAL INTAKE RUNNER 178CC , COMBUSTION CHAMBER 76CC WITH HEAT RISER / 69-86 INTAKE MANIFOLD BOLT PATTERN, 7 BOLT HOLE EXHAUST MOUNTING, ANGLE SPARK PLUG, PERIMETER VALVE COVER MOUNTING HOLES 1.94”  1.500”  1.990–2.000”  1.990–2.000” 
CH350AA $617.22 5.7  350  55–86   UNIVERSAL INTAKE RUNNER 178CC, COMBUSTION CHAMBER 76CC WITH HEAT RISER / 69-86 INTAKE MANIFOLD BOLT PATTERN, 7 BOLT HOLE EXHAUST MOUNTING, ANGLE SPARK PLUG, PERIMETER VALVE COVER HOLES, ASSEMBLED 1.94”  1.500”  1.990–2.000”   1.990–2.000”
CH350C $481.40 5.7  350  96–02   167cc intake runner / 76cc comb. chamber 12558062, 10239906 1.940”  1.500”  1.975–2.005”  2.015–2.045” 
CH350CA $617.22 5.7  350  96–02   REPLACES CASTING NUMBER 12558062, 10239906, INTAKE RUNNER 170CC
COMBUSTION CHAMBER 64CC, STRAIGHT SPARK PLUG. .ASSEMBLED		 1.940”  1.500”   1.975–2.005” 2.015–2.045” 
 CH350E $440.80  5.7  350  -  12558062, 10239906 (SAME AS CC170BA)
Vortec comb. chamber / 69–86 intake bolt patterns		  1.940”  1.500”  1.975–2.005”  2.015–2.045”
CH350F $440.80 5.7  350  –    12558062, 10239906 (SAME AS CC170BA) Vortec comb. chamber / 69–86 intake bolt patterns
Outer perimeter valve cover mounting hole		 1.940”   1.500” 1.975–2.005"  2.015–2.045” 
CH350G $414.33 5.7  350  –   REPLACES CASTING NUMBER:14101083, 14096217, 14102191, 14102193, INTAKE
RUNNER 176CC, COMBUSTION CHAMBER 64CC VORTEC STYLE WITH HEAT RISER /
87 95 INTAKE MANIFOLD BOLT PATTERN, CENTER BOLT DOWN VALVE COVER HOLES ANGLE SPARK PLUG, RECOMMENDED TO BE REPLACED IN PAIRS.		 1.940”  1.500”  1.975–2.005”  2.015–2.045” 
CH350GA $585.14 5.7 350 87-95 REPLACES CASTING NUMBER: 14101083, 14096217, 14102191, 14102193, INTAKE
RUNNER 176CC, COMBUSTION CHAMBER 64CC VORTEC STYLE WITH HEAT RISER /
87 95 INTAKE MANIFOLD BOLT PATTERN, CENTER BOLT DOWN VALVE COVER HOLES ANGLE SPARK PLUG RECOMMENDED TO BE REPLACED IN PAIRS. ASSEMBLED		 1.940” 1.500” 1.975–2.005” 2.015–2.045”
CH350H $403.00 5.7  350  69-86  REPLACES CASTING NUMBER:14101083, 14096217, 14102191, 14102193, INTAKE
RUNNER 176CC, COMBUSTION CHAMBER 64CC VORTEC STYLE WITH HEAT RISER /
69-86 INTAKE MANIFOLD BOLT PATTERN, PERIMETER VALVE COVER HOLES, ANGLE
SPARK PLUG, RECOMMENDED TO BE REPLACED IN PAIRS.		 1.940”  1.500”  1.975–2.005”  2.015–2.045” 
CH350HA $585.13 5.7 350 1969 - 1986 REPLACES CASTING NUMBER:14101083, 14096217, 14102191, 14102193, INTAKE
RUNNER 176CC, COMBUSTION CHAMBER 64CC VORTEC STYLE WITH HEAT RISER /
69-86 INTAKE MANIFOLD BOLT PATTERN, PERIMETER VALVE COVER HOLES, ANGLE
SPARK PLUG RECOMMENDED TO BE REPLACED IN PAIRS. ASSEMBLED		 1.940”  1.500”  1.975–2.005”  2.015–2.045” 
CH350I $481.40 5.7  350  55–86  IMCA SANCTIONED SPORT MOD HEAD INTAKE RUNNER 178CC, COMBUSTION
CHAMBER 76CC 69-86 INTAKE MANIFOLD BOLT PATTERN,7 BOLT HOLE EXHAUST
MOUNTING PERIMETER VALVE COVER HOLES, WITH HEAT RISER		 1.940”  1.500”   1.970–2.000” 1.970–2.000” 
CHLSBLNK $719.49 - - - LS PORTER BLANK - - - -
CH395N $365.20 6.2  381  90–95  10137567–90º intake bolts  1.811”  1.535”  2.1570–2.1870”  2.2300–2.20” 
CH395N $365.20 6.5  395  92–99   10137567–90º intake bolts 1.811”  1.535”  2.1570–2.1870”  2.2300–2.2600” 
 CH395B $365.20 6.5  395  92–99 

 10137567–60º intake bolts

 1.811”  1.535”  2.1570–2.1870”  2.2300–2.2600” 
CH402A $793.65 6.6 402 2004 - 2006 DURAMAX - VIN 2 LLY - - - -
CH402B $793.65 6.6 402 2006 - 2007 DURAMAX - VIN D LBZ - - - -
CH454A $618.72 7.4 454 . PERFORM. RECTANGULAR PORT-INTAKE RUNNER 320CC, COMBUSTION CHAMBER 119CC - - - -
CH454B $618.72 7.4 454 . PERFORM. RECTANGULAR PORT-INTAKE RUNNER 360CC, COMBUSTION CHAMBER 119CC - - - -
CH454C $571.05 7.4 454 1996 - 2000 UNIVERSAL REPLACES CASTING NUMBER 12560241, 10141279, 246CC INTAKE RUNNER 100CC COMBUSTION CHAMBER / VORTEC CHAMBER (.370/.3716 VALVE ID) DIRECT REPLACEMENT FOR 1996- 2000 / WHEN INSTALLING ON 1996 AND EARLIER MODELS, MUST USE BOLT DOWN ROCKER ARMS AND HEAD GASKET BY FELPRO # 1017 OR EQUIV. - - - -
CH454CA $835.70 7.4 454 1996 - 2000 REPLACES CASTING NUMBER 12560241, 10141279,246CC INTAKE RUNNER, 100CC
COMBUSTION CHAMBER / VORTEC CHAMBER (.370/.3716 VALVE ID) DIRECT
REPLACEMENT FOR 1996- 2000. ASSEMBLED		 - - - -
CH502A $543.14 8.2 502 - MARINE / CAST IRON REPLACES CASTING # 14097088, INTAKE RUNNER 299CC, COMBUSTION PERFORM. CHAMBER 118CC - - - -


Engine Quest Performance Small Block Chevrolet cylinder heads.

220cc Intake Runners - New Bare cast iron cylinder heads

 Part #
Your Cost
each		  Description  Guide I.D.  Intake Port
Width		  Intake Port
Height		  Exhaust Port
Width		  Exhaust Port
Height
 CC220BA $471.25  2.02/1.60
64cc AP		  11/32"  1.23"  2.23"  1.35"  1.35"
 CC220BS $471.25   2.02/1.60
64cc SP		  11/32"  1.23"  2.23"  1.35"  1.35"
 CC220DA $455.30   2.02/1.60
72cc AP		  11/32"  1.23"  2.23"  1.35"  1.35"
 CC220DS $455.30   2.02/1.60
72cc SP		  11/32"  1.23"  2.23"  1.35"  1.35"

N/A no longer avaialble
AP = angle plug
SP = straight plug


New replacement bare cylinder heads
Thicker casting - Racing technology used for development - Highest grade cast iron & aluminum - hardened exhaust seats - improved design to resist cracking - Redesigned water flow for greater thermal conductivity - 3 angle valve finish - Superior port finish for improved flow - CNC machined guides & seats - 25 point check on every cylinder head - Thicker deck for greater strength

Part #__Your Cost ea. __MFG___Liter_CID___Years___Casting #
CH150N $452.03 __AMC/Jeep_2.46___50___86-02_____403
CH134N $528.99 __Chevrolet__2.2___134___90-97_____391, 391S
CH305A $410.97 __Chevrolet__5.0___05____96-00_____059, 113, 520
CH350A $481.40 __Chevrolet__5.7___350___55-86_____Univeral
CH350C $481.40 __Chevrolet__5.7___350___96-00_____906, 062
CH395N $365.20 __Chevrolet__6.5___395___92-99_____567 - 90 degree intake bolts
CH153N $333.10 __Chrysler___2.2___135___86-90_____782
CH153N $333.10 __Chrysler___2.5___153___87-95_____782
CH155N $313.49 __Chrysler___2.6___156___84-88_____3-valve
CH318A $481.40 __Chrysler___5.2___318___92-01_____71, 044, 468, 466
CH318A $481.40 __Chrysler___5.9___360___2-01_____671, 044, 468, 466
CH244A $244.72 __Ford______4.0___244___90-94_____90TM, 93TM
CH256A $143.55 __Ford______4.0___244___98-00_____98TM
CH300A $664.94 __Ford______3.8___232___96-01_____YF2E
CH300C $411.46 __Ford______4.9___300___87-98_____E7TE
CH138N $536.07 __Isuzu______2.3___4ZD1_86-95_____4ZD1
CH156N $349.79 __Isuzu______2.6___4ZE1__88-97_____4ZE1
CH146N $310.63 __Nissan_____2.4___Z24___83-89
CH144N $404.39 __Toyota____2.4___144___89-95_____22R, 22REC
Bare cylinder heads include: valve guides, valve seats, camshaft towers and bolts (where required).


NEW! EQ now offers bare and fully loaded cylinder heads!
All EQ cylinder heads outperform their competitors whether you need stock or performance heads.
• EQ Bare heads are ready to install to the drive train…no porting or polishing needed!
• EQ Loaded heads include OE-quality stainless steel valves, seals, valve springs and retainers.
• The highest grade cast iron and aluminum
• Redesigned water flow for greater cooling
• Racing technology used for development
• Thicker deck for greater strength THERMAL CONDUCTIVITY
• HARDENED exhaust seats
• Improved design to resist cracking
25 point quality check on every head
• CNC machined guides and seats
• Backed by our reputation
• Competitive Prices!
• Superior port finish for increased flow
• 3 angle valve finish
(ASSEMBLED if noted = complete head)
Priced each (for one cylinder head) Most heads are bare, no valves, etc. unless noted.


Chrysler /MITSUBISHI
Priced each (for one cylinder head)
 PART #
Your Cost		 LITERS CID
or CC		 YEARS CASTING NOTES VALVE
SIZE
INTAKE		 VALVE
SIZE
EXHAUST		 INSTALLED
VALVE HEIGHT
INTAKE		 INSTALLED
VALVE HEIGHT
EXHAUST
CH123N $306.52 2.0 1997 83–91 12 valve 4G63 12 VALVE WITH FUEL PUMP HOLE 1.299” 1.142” 1.950”–1.960” 1.950”–1.960”
CH124N $428.23 * 2.0 4G63 - 8 VALVE WITH FUEL PUMP HOLE
CH143A $478.70 * 2.4 2350 93–99 8 valve 4G64 SOHC 1.299” 1.142” 1.950”–1.960” 1.950”–1.960”
CH153N $333.10 2.5 153 87–95 782 1.598” 1.394” 1.9600–2.0090” 1.9600–2.0090”
CH154N $403.05 * 2.6 2555 81–90 8 valve SOHC G54B 1.81” 1.493” 1.690–1.710” 1.680–1.700”
CH155N $313.49 2.6 156 81–88 3 valve (12-valve SOHC G54B) 1.810” 1.493” 1.690–1.710” 1.680–1.700”
CH318A $481.40 5.2 318 92–04 53005714, 53006671, 53020466, 53020468
intake port 172cc / combustion chamber 62ccs		 1.920” 1.624” 1.7830–1.85” 1.7830–1.85”
CH318A $481.40
in stock		 5.9 360 92–02 53005714, 53006671, 53020466, 53020468
intake port 172cc / combustion chamber 62cc s		 1.920” 1.624” 1.7830–1.85” 1.7830–1.85”
CH318AA $670.54
in stock		 5.9 360 92–02 53005714, 53006671, 53020466, 53020468 (assembled) Complete head
intake port 172cc / combustion chamber 62cc		 1.920” 1.624” 1.7830–1.85” 1.7830–1.85”
CH318B $481.40
In stock		 5.2 318 - 53005714, 53006671, 53020466, 53020468
with LA Style intake bolt pattern		 1.920” 1.624” 1.7830–1.85” 1.7830–1.85”
5.9 360
CH318BA $670.54
In stock		 5.2 318 - 53005714, 53006671, 53020466, 53020468 (assembled) Complete head
with LA Style intake bolt pattern		 1.920” 1.624” 1.7830–1.85” 1.7830–1.85”
5.9 360

*LISTINGS ARE ALSO FOR INDUSTRIAL FORKLIFT APPLICATIONS:
CH122A $432.50 , CH124N $428.23 , CH143A $478.70 , CH154N $403.05 , CH136N $291.05

NEW CYLINDER HEADS

FORD
(ASSEMBLED if noted = complete head)
Priced each (for one cylinder head) Most heads are bare, no valves, etc. unless noted.

 PART #
Your Cost		 LITERS CID
or CC		 YEARS CASTING NOTES VALVE
SIZE
INTAKE		 VALVE
SIZE
EXHAUST		 INSTALLED
VALVE HEIGHT
INTAKE		 INSTALLED
VALVE HEIGHT
EXHAUST
CH244A $244.72 4.0 244 90–94 90TM , 93TM 1.713” 1.358” 1.7350–1.7450” 1.7350–1.7450”
CH244AA $357.77 4.0 244 90–94 90TM, 93TM (assembled) complete head 1.713” 1.358” 1.7350–1.7450” 1.7350–1.7450”
CH244B $244.90 4.0 244 95–97 95TM 1.713” 1.358” 1.7350–1.7450” 1.7350–1.7450”
CH244BA $357.77 4.0 244 95–97 95TM (assembled) complete head 1.713” 1.358” 1.7350–1.7450” 1.7350–1.7450”
CH244C $365.34 4.0 244 98–00 98TM 1.713” 1.358” 1.7350–1.7450” 1.7350–1.7450”
CH244CA $496.85 4.0 244 98–00 98TM (assembled) complete head 1.713” 1.358” 1.7350–1.7450” 1.7350–1.7450”
CH300A $664.94 4.9 300 87–96 E 7TE with A.I.R. holes 1.718” 1.560” 2.1200–2.1500” 2.2000–2.2300”
CH300B $550.02 4.9 300 87–96 E 7TE NON SMOG (made w/70,000 series DuraBond exhaust seats FOR FLEX FUEL ENGINES) 1.718” 1.560” 2.1200–2.1500” 2.2000–2.2300”
CH300BA
$0.00		 4.9 300 87–96 E7TE NON SMOG (assembled)
complete head (made w/70,000 series DuraBond exhaust seats FOR FLEX FUEL ENGINES)		 1.718” 1.560” 2.1200–2.1500” 2.2000–2.2300”
CH300C $411.46 4.9 300 87–96 E 7TE NON SMOG 1.718” 1.560” 2.1200–2.1500” 2.2000–2.2300”



ISUZU

Priced each (for one cylinder head)
 PART #
Your Cost		 LITERS CID
or CC		 YEARS CASTING NOTES VALVE
SIZE
INTAKE		 VALVE
SIZE
EXHAUST		 INSTALLED
VALVE HEIGHT
INTAKE		 INSTALLED
VALVE HEIGHT
EXHAUST
CH138N $536.07 2.3 2254 86–95 4ZD1 1.736” 1.453” 1.7200–1.7500” 1.7200–1.7500”
CH156N $349.79 2.6 2559 88–97 4ZE1 1.736” 1.453” 1.7200–1.7500” 1.7200–1.7500”



MAZDA
Priced each (for one cylinder head)

 PART #
Your Cost		 LITERS CID
or CC		 YEARS CASTING NOTES VALVE
SIZE
INTAKE		 VALVE
SIZE
EXHAUST		 INSTALLED
VALVE HEIGHT
INTAKE		 INSTALLED
VALVE HEIGHT
EXHAUST
CH122A $432.50 * 2.0 1998 84–87 FE 1.732” 1.417” 1.831–1.850” 1.831–1.850”
CH122A $432.50 * 2.2 2184 87–93 F2 / 8 valve 1.732” 1.417” 1.831–1.850” 1.831–1.850”
CH157N $502.52 2.6 2606 89–94 G6 / 12 valve 1.312” 1.417” 1.9290–1.9490”
48.997–49.505mm		 1.9290–1.9490”
48.997–49.505mm

*LISTINGS ARE ALSO FOR INDUSTRIAL FORKLIFT APPLICATIONS


NISSAN
Priced each (for one cylinder head)

 PART #
Your Cost		 LITERS CID
or CC		 YEARS CASTING NOTES VALVE
SIZE
INTAKE		 VALVE
SIZE
EXHAUST		 INSTALLED
VALVE HEIGHT
INTAKE		 INSTALLED
VALVE HEIGHT
EXHAUST
CH146N $310.63 2.4 2389 83–89 Z24 1.658” 1.500” 1.840–1.860” 1.840–1.860”

TOYOTA
Priced each (for one cylinder head)
 PART #
Your Cost		 LITERS CID
or CC		 YEARS CASTING NOTES VALVE
SIZE
INTAKE		 VALVE
SIZE
EXHAUST		 INSTALLED
VALVE HEIGHT
INTAKE		 INSTALLED
VALVE HEIGHT
EXHAUST
CH132N $375.05 2.2 - 97–01 3SFE/5SFE, DOHC, W/O DISTRI- BUTOR HOLE , W/CAM SENSOR 1.260” 1.063” 1.510”–1.520” 1.510”–1.520”
CH136N $291.05 * 2.0 1998 84–85 3YEC 8 valve OHV 1.580” 1.425” 1.890”–1.910” 1.890”–1.900”
CH136N $291.05 2.2 2237 86–89 4YEC 8 valve OHV 1.580” 1.425” 1.890”–1.910” 1.890”–1.900”
CH144N $404.39 2.4 144 5–95 22R, 22REC 1.770” 1.457” 44.55mm–44.92mm 44.55mm–44.92mm
CH144NA $550.02 2.4 144 5–95 22R, 22REC (ASSEMBLED NO CAM) 1.770” 1.457” 44.55mm–44.92mm 44.55mm–44.92mm
CH274N $597.17
$651.05		 4.5 4476 93–97 1FZFE DOHC 1.496” 1.260” 1.590” 1.590”

*LISTINGS ARE ALSO FOR INDUSTRIAL FORKLIFT APPLICATIONS:
CH122A, CH124N, CH143A, CH154N, CH136N $291.05

PERFORMANCE CYLINDER HEADS


EQ Cylinder Heads, using the latest in Chevrolet technology, have been redesigned to give you more power and better efficiency, at competitive prices!
All EQ Performance Cylinder Heads Feature:
• AS CAST combustion chambers and ports
• DuraBond Exhaust Seats
• 3 angle valve job
• Thick deck faces for angle milling
• Phosphor bronze intake and exhaust guide (23º HEADS ONLY )
• Machined for guide plate use
• Raised Intake Runner Ports for increased performance
• Order one IS350 (Screw in studs) for each cylinder head
• Newly designed combustion chambers

PART #
Your Cost		 INTAKE
RUNNER
VOLUME		 COMBUSTION
CHAMBER
VOLUME		 DIRCTON
OF
SPARK PLUG		 INTAKE
VALVE		 EXHAUST
VALVE		 GUIDE
ID		 GUIDE
OD		 - - - -
VORTEC BOLT ON PERFORMANCE FOR 305 CID –A TRUE POWER IMPROVED HEAD
CH305B $481.40 170cc 58cc Straight 1.84 1.50 11/32” .530”/.531” REPLACES CASTING NUMBERS:12552520, 12557113, 12558059, 1987-95
INTAKE RUNNER 170CC, COMBUSTION CHAMBER 58CC, ANGLE SPARK PLUG
Vortec Bolt On Performance for 350 cid – A TRUE POWER IMPROVED HEAD
CH350C $481.40 170cc 64cc Straight 1.94 1.50 11/32” .530”/.531” REPLACES CASTING NUMBER 12558062, 10239906 1996-06
 
PART #
Your Cost		 INTAKE
RUNNER
VOLUME		 COMBUSTION
CHAMBER
VOLUME		 DIRCTON
OF
SPARK PLUG		 INTAKE
VALVE		 EXHAUST
VALVE		 GUIDE
ID		 GUIDE
OD		 INTAKE
PORT
WIDTH		 INTAKE
PORT
HEIGHT		 EXHAUST
PORT
WIDTH		 EXHAUST
PORT
HEIGHT
Bolt On Performance for 327 / 350 cid
CH350I $481.40 167cc 76cc Straight 1.94 1.50 11/32” 530”/.531” 1.19” 2.00” 1.35” 1.35”
CC167ES2. N/A 167cc 67cc Straight 2.02 1.60 11/32” .530”/.531” 1.19” 2.00” 1.35” 1.35”
CC167ES. N/A 167cc 76cc (CH350A) Straight 1.94 1.50 11/32” 530”/.531” 1.19” 2.00” 1.35” 1.35”
Best suited for 350 / 383 cid – Great FOR IMCA MODIFIED CARS – For Max street performance Oval Track and Drag
CC200BA $505.20 200cc 64cc Angled 2.02 1.60 11/32” .530”/.531” 1.23” 2.12” 1.35” 1.35”

N/A not longer available.

PERFORMANCE CYLINDER HEADS

CHRYSLER 318/360 Power Improved


PART #
Your Cost		 INTAKE
RUNNER
VOLUME		 COMBUSTION
CHAMBER
VOLUME		 INTAKE
VALVE		 EXHAUST
VALVE
1992–2004 V8 MAGNUM
CH318A $481.40 172cc 62cc 1.920” 1.624”
CH318AA $670.54 (assembled) complete head 172cc 62cc 1.920” 1.624”
WITH LATYPE BOLT PATTERN
USES ALL MAGNUM ROCKER PARTS WITH LA STYLE INTAKE
CH318B $481.40 172cc 62cc 1.920” 1.624”

FLOW NUMBERS for Cylinder Heads
EQ STRICTLY BY THE NUMBERS, HOW OUR HEADS STACK UP.
Need to know how our numbers compare against the competition? We provide you with the following extensive list of cylinder head flow numbers to help you decide.

CH318A $481.40
CH318B $481.40
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 68.2 .100 57.2
.200 124.1 .200 114.1
.300 179.6 .300 155.3
.400 213.8 .400 180
.500 227 .500 187.3
.600 233.1 .600 188.7
.700 - .700 -
CH350I $481.40
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 71.2 .100 59.4
.200 134.6 .200 105.2
.300 189.4 .300 139.8
.400 216.9 .400 144.1
.500 225.8 .500 144.5
.600 213.4 .600 142.3
.700 212.2 .700 143.1
CH350C $481.40
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 71.2 .100 59.4
.200 134.6 .200 105.2
.300 189.4 .300 139.8
.400 216.9 .400 144.1
.500 225.8 .500 144.5
.600 213.4 .600 142.3
.700 212.2 .700 143.1
CH350G $414.33
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 71.2 .100 59.4
.200 134.6 .200 105.2
.300 189.4 .300 139.8
.400 216.9 .400 144.1
.500 225.8 .500 144.5
.600 213.4 .600 142.3
.700 212.2 .700 143.1
CH350H $403.00
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 71.2 .100 59.4
.200 134.6 .200 105.2
.300 189.4 .300 139.8
.400 216.9 .400 144.1
.500 225.8 .500 144.5
.600 213.4 .600 142.3
.700 212.2 .700 143.1
CH454A $618.72
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 75.9 .100 66.
.200 144.2 .200 126.6
.300 214.5 .300 168.9
.400 273.9 .400 204.6
.500 326.4 .500 231
.600 355.6 .600 252.9
.700 362.8 .700 271.2
CH454B $618.72
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 77.7 .100 72.9
.200 141.5 .200 128.3
.300 209.4 .300 169.9
.400 271.9 .400 206.2
.500 325.6 .500 228.1
.600 259.4 .600 251.2
.700 371.2 .700 268.4
.800 375.7 .800 278.9
CH3502A
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 74.2 .100 74.5
.200 142.6 .200 123.5
.300 220.4 .300 150.6
.400 270.2 .400 173.3
.500 278.9 .500 192.8
.600 302.4 .600 214.2
.700 314.7 .700 226.4
.800 320.4 .800 278.9
CC200BA $505.20
INTAKE EXHAUST
LIFT CFM LIFT CFM
.100 74.8 .100 65.5
.200 137.2 .200 113.3
.300 185.7 .300 146.9
.400 225. .400 170.2
.500 252.5 .500 181.7
.600 265.4 .600 187.8
.700 272.2 .700 189.5
.



DYNO RESULTS – CAM .474” / .510” LIFT Carb. 650 Holly
Run on ZZ4 short block
CC200BA $505.20
RPM TORQUE POWER
2500 334.2 159.1
2600 358.3 177.3
2700 390.5 200.7
2800 396.2 211.2
2900 402.2 222.0
3000 100.3 228.6
3100 397.5 234.6
3200 395.5 241.0
3300 395.0 248.2
3400 397.2 257.1
3500 397.6 265.0
3600 398.8 273.4
3700 401.2 282.6
3800 403.8 292.1
3900 406.4 301.8
4000 409.2 311.7
4100 409.3 319.5
4200 407.4 325.8
4300 403.8 330.6
4400 399.5 334.7
4500 397.8 340.8

“EQ Heads have the cleanest runners, they flow better than any other cast iron head.”
– Chad Lenker, Engine Builder, Ultimate Machine

“More power at a lower price.
EQ Cylinder Heads are one of the best kept secrets in racing.”
– Brian Blessington, IMCA Racer
The information in this catalog is from reliable sources and has been compiled with the utmost care, however, we cannot be responsible for errors. Listing in this catalog does not guarantee their availability.

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