J.E. Pistons High Performance

Street Strip Race

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 OR use your e-mail program and type in ron@rpmrons.com to send an e-mail with what you need

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Engine Rebuild Kit and Parts Online Catalog.

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Call toll free to order at 1-866-700-5877 or
Contact us anytime OR use your e-mail program and type in ron@rpmrons.com to send an e-mail with what you need
or use the Order Form for questions and to check stock.

Chevrolet Small Block Chevy

305 Small Block 23º Flat Top
PISTON DESIGN
Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength
up. to 20% lighter than traditional equivalent
High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation
Accumulator grooves for improved ring seal
Designed for normally aspirated or moderate forced induction/nitrous applications
Now includes high performance skirt coating!
RINGS INCLUDED
Lightweight, low friction metric ring package included
1.2mm top ring, 1.5mm 2nd ring, 3.0mm standard tension oil ring
Minimal filing required









PINS AND LOCKS
High quality 2.250" pin further reduces reciprocating weight
Carbon steel wire locks included
305 SERIES FLAT TOP Std Bore: 3.736 Ring package designed for: 1/16, 1/16, 3/16 Rings

Part #
Your Cost

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters
Comp Ratio
52---58--64

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

170771 $1,136.14

310

3.766

3.480

5.700

9.000

1.560

10.8

10.0

9.3

-5.0

412

Flat Top

0.030

J100F8-3766-5 $383.37

170772 $1,136.14

315

3.796

3.480

5.700

9.000

1.560

10.9

10.1

9.4

-5.0

418

Flat Top

0.060

J160F8-3796 $253.37


350 / 400 STANDARD FLAT TOP
These classic, race winning JE flat top pistons work with most aftermarket 23º heads. They have extra deep valve pockets and a low-friction skirt design.
These pistons are designed to use 1/16, 1/16, 3/16 rings or 1/16, 1/16, 3mm rings, see footnote J.
Includes:
Contact Reduction Grooves
Double Spiro Locks #927-042-CS
Double Pin Oilers


 







350 Series Std Bore: 4.000 Ring package designed for: 1/16, 1/16, 3/16 Rings 1.000" Compression height pistons not intended for nitrous use.

Part #
Your Cost

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters
Comp Ratio
58---64--76

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

181920 $1,082.73

383

4.030

3.750

5.700

9.000

1.425

11.9

11.1

9.7

-5.0

424

M

0.030

J10008-4030-5 $213.11

181915 $1,082.73

355

4.020

3.500

6.000

9.000

1.250

11.2

10.3

9.1

-5.0

397

A

0.020

J10008-4020-5 $213.11

181916 $1,082.73

357

4.030

3.500

6.000

9.000

1.250

11.2

10.3

9.1

-5.0

399

A

0.030

J10008-4030-5 $213.11

181924 $1,136.14

358

4.030

3.500

5.700

9.000

1.550

11.2

10.3

9.1

-5.0

439

A,M

0.030

J10008-4030-5 $213.11

181907 $1,190.67

357

4.030

3.500

6.250

9.000

1.000

11.2

10.3

9.1

-5.0

369

A,B

0.030

J10008-4030-5 $213.11

181925 $1,136.14

358

4.035

3.500

5.700

9.000

1.550

11.2

10.3

9.1

-5.0

442

A,M

0.035

J10008-4030-5 $213.11

181917 $1,136.14

358

4.035

3.500

6.000

9.000

1.250

11.2

10.3

9.1

-5.0

403

A,M

0.035

J10008-4030-5 $213.11

181918 $1,082.73

359

4.040

3.500

6.000

9.000

1.250

11.2

10.3

9.1

-5.0

406

A

0.040

J10008-4040-5 $213.11

181926 $1,136.14

359

4.040

3.500

5.700

9.000

1.550

11.2

10.3

9.1

-5.0

449

A

0.040

J10008-4040-5 $213.11

181908 $1,190.67

359

4.040

3.500

6.250

9.000

1.000

11.2

10.3

9.1

-5.0

370

A,B,M

0.040

J10008-4040-5 $213.11

181909 $1,136.14

359

4.040

3.500

6.200

9.000

1.050

11.2

10.3

9.1

-5.0

379

A,B

0.040

J10008-4040-5 $213.11

181927 $1,136.14

362

4.060

3.500

5.700

9.000

1.550

11.2

10.3

9.1

-5.0

459

A

0.060

J10008-4060-5 $213.11

181919 $1,082.73

362

4.060

3.500

6.000

9.000

1.250

11.2

10.3

9.1

-5.0

412

A

0.060

J10008-4060-5 $213.11

207511 $1,136.14

364

4.070

3.500

6.000

9.000

1.250

11.2

10.3

9.1

-5.0

416

A

0.070

J100L8-4070-5 $250.76

A=Fits 3.480 and 3.500 stroke.    B=Oil Rail Support is included.    J=Indicates 3mm Oil Ring.
L=Indicates limited quantities available. M=Made To Order


350 Series Std Bore: 4.000 Ring package designed for: 1/16, 1/16, 3.0mm Rings

Part #
Your Cost

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters
Comp Ratio
58---64--76

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

181910 $1,136.14

381

4.020

3.750

6.000

9.000

1.125

11.8

11.0

9.6

-5.0

384

J,M

0.020

J30008-4020-5 $265.10

181911 $1,082.73

383

4.030

3.750

6.000

9.000

1.125

11.9

11.1

9.7

-5.0

391

J

0.030

J30008-4030-5 $265.10

181912 $1,136.14

384

4.035

3.750

6.000

9.000

1.125

11.9

11.1

9.7

-5.0

390

J

0.035

J30008-4030-5 $265.10

181913 $1,136.14

385

4.040

3.750

6.000

9.000

1.125

11.9

11.1

9.7

-5.0

394

J

0.040

J30008-4040-5 $265.10

181914 $1,082.73

388

4.060

3.750

6.000

9.000

1.125

11.9

11.1

9.7

-5.0

398

J

0.060

J30008-4060-5 $265.10

181910 $1,136.14

355

4.020

3.500

6.125

9.000

1.125

11.2

10.3

9.1

-5.0

384

A,J,M

0.020

J30008-4020-5 $265.10

181911 $1,082.73

357

4.030

3.500

6.125

9.000

1.125

11.2

10.3

9.1

-5.0

391

A,J

0.030

J30008-4030-5 $265.10

181912 $1,136.14

358

4.035

3.500

6.125

9.000

1.125

11.2

10.3

9.1

-5.0

390

A,J,M

0.035

J30008-4030-5 $265.10

181913 $1,136.14

359

4.040

3.500

6.125

9.000

1.125

11.2

10.3

9.1

-5.0

394

A,J

0.040

J30008-4040-5 $265.10

181914 $1,082.73

362

4.060

3.500

6.125

9.000

1.125

11.2

10.3

9.1

-5.0

398

A,J

0.060

J30008-4060-5 $265.10

A=Fits 3.480 and 3.500 stroke.    B=Oil Rail Support is included.    J=Indicates 3mm Oil Ring.
L=Indicates limited quantities available. M=Made To Order


400 Series Std Bore: 4.125 Ring package designed for: 1/16, 1/16, 3/16 Rings 1.000" Compression height pistons not intended for nitrous use.

Part #
Your Cost

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters
Comp Ratio
58---64--76

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

242886 $1,136.14

428

4.125

4.000

6.000

9.000

1.000

13.1

12.2

10.7

-5.0

391

B

STD

J10008-4125-5 $250.76

338213 $1,136.14

430

4.135

4.000

6.000

9.000

1.000

13.2

12.2

10.7

-5.0

NEW

B,M

0.010

J100F8-4135-5 $261.11

338214 $1,136.14

432

4.145

4.000

6.000

9.000

1.000

13.3

12.3

10.8

-5.0

NEW

B,M

0.020

J10008-4145-5 $250.76

194339 $1,136.14

434

4.155

4.000

6.000

9.000

1.000

13.3

12.3

10.8

-5.0

407

B

0.030

J10008-4155-5 $250.76

194340 $1,136.14

436

4.165

4.000

6.000

9.000

1.000

13.3

12.4

10.9

-5.0

411

B

0.040

J10008-4165-5 $250.76

207512 $1,136.14

440

4.185

4.000

6.000

9.000

1.000

13.5

12.5

11.0

-5.0

420

B

0.060

J100F8-4185-5 $261.11

352625 $1,136.14

414

4.125

3.875

6.000

9.000

1.062

12.7

11.8

10.4

-5.0

NEW

B

STD

J10008-4125-5 $250.76

352626 $1,136.14

415

4.135

3.875

6.000

9.000

1.062

12.8

11.9

10.4

-5.0

NEW

B

0.010

J100F8-4135-5 $261.11

352627 $1,136.14

416

4.145

3.875

6.000

9.000

1.062

12.8

11.9

10.5

-5.0

NEW

B

0.020

J10008-4145-5 $250.76

352628 $1,136.14

421

4.155

3.875

6.000

9.000

1.062

12.9

12.0

10.5

-5.0

NEW

B

0.030

J10008-4155-5 $250.76

352629 $1,136.14

422

4.165

3.875

6.000

9.000

1.062

12.9

12.0

10.6

-5.0

NEW

B

0.040

J10008-4165-5 $250.76

181938 $1,136.14

401

4.125

3.750

6.000

9.000

1.125

12.3

11.4

10.1

-5.0

418

B

STD

J10008-4125-5 $250.76

338215 $1,136.14

403

4.135

3.750

6.000

9.000

1.125

12.4

11.5

10.1

-5.0

NEW

B,M

0.010

J100F8-4135-5 $261.11

181939 $1,136.14

405

4.145

3.750

6.000

9.000

1.125

12.4

11.5

10.1

-5.0

422

B,M

0.020

J10008-4145-5 $250.76

181940 $1,136.14

407

4.155

3.750

6.000

9.000

1.125

12.5

11.6

10.2

-5.0

426

B

0.030

J10008-4155-5 $250.76

181944 $1,190.67

407

4.155

3.750

5.700

9.000

1.425

12.5

11.6

10.2

-5.0

472

M

0.030

J10008-4155-5 $250.76

181941 $1,136.14

409

4.165

3.750

6.000

9.000

1.125

12.5

11.6

10.2

-5.0

431

B

0.040

J10008-4165-5 $250.76

181942 $1,082.73

380

4.155

3.500

6.000

9.000

1.250

11.7

10.9

9.6

-5.0

445

A

0.030

J10008-4155-5 $250.76

181944 $1,190.67

380

4.155

3.500

5.850

9.025

1.425

11.7

10.9

9.6

-5.0

472

M

0.030

J10008-4155-5 $250.76

181943 $1,082.73

381

4.165

3.500

6.000

9.000

1.250

11.7

10.9

9.6

-5.0

447

A,M

0.040

J10008-4165-5 $250.76

A=Fits 3.480 and 3.500 stroke.    B=Oil Rail Support is included.    J=Indicates 3mm Oil Ring.
L=Indicates limited quantities available. M=Made To Order

Footnotes:
A fits 3.480 and 3.500 stroke
B Oil Rail Support is Included
C .927 Pin Diameter
D .912 Pin Diameter
E .990 wrist pin
F Indicates 1.040 Pin Diameter
H Indicates 1.094 Pin Diameter
J Indicates 3mm Oil Ring
K .945 Pin Diameter
L Limited Quantities available
M Made To Order
P .975 Pin Diameter
S Solid dome design
W 428 Crank Shaft
X angle milled heads

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