SRP Pistons from J.E. Mopar/Chrysler
Performance pistons & rings for street strip or 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 24-7
Hours 9-5 Monday-Friday

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Call toll free to purchase at: 1-866-700-5877

400/440 Wedge Flat Top

SMALL BLOCK Chrysler 318 / 340 / 360

4032 low expansion high silicon alloy heat treated to SRP specifications Forced Pin Oiler for increased wrist pin lubrication Pin fitting and double spiro locks included CNC Machined ring grooves accept 1/16, 1/16, 3/16 rings (Rings Sold Seperately) .984 x 2.750 x .150 straight wall wrist pin included (138 grams)

318 Flat Top Std Bore: 3.910 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

60

65

70

Compression Ratio

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

345792 $717.46

323

3.940

3.313

6.125

9.572

1.790

9.8

9.2

8.8

-5.0cc

Call
 -

0.030

J100F8-3935-5 $324.91

345793 $717.46

325

3.950

3.313

6.125

9.572

1.790

9.9

9.3

8.9

-5.0cc

Call
 -

0.040

S100S8-3945-5 $155.95

345794 $717.46

333

4.000

3.313

6.125

9.572

1.790

10.1

9.4

9.1

-5.0cc

Call
 -

0.090

S100S8-4000-5 $155.95


340 Flat Top Std Bore: 4.040 Ring package designed for: 1/16, 1/16, 3/16

Part #
Your Cost

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters

60cc

65cc

70cc

Compression Ratio

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

345777 $717.46

340

4.040

3.313

6.125

9.586

1.804

10.3

9.6

9.0

-5cc

NEW
 -

STD

S100S8-4040-5 $155.95

345778 $717.46

343

4.060

3.313

6.125

9.586

1.804

10.4

9.7

9.1

-5cc

NEW
 -

.020

S100S8-4060-5 $155.95

142068 $717.46

345

4.070

3.313

6.125

9.586

1.804

10.5

9.8

9.2

-5cc

530
 -

0.030

J100F8-4070-5 $261.11

310725 $717.46

340

4.080

3.313

6.125

9.586

1.804

10.6

10.0

9.4

-5cc

541
 -

0.040

J100F8-4080-5 $261.11


360 Flat Top Std Bore: 4.000 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

60cc

65cc

70cc

Compression Ratio

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

345796 $717.46

364

4.020

3.580

6.125

9.585

1.670

10.8

10.3

9.6

-5cc

NEW

M

STD

S100S8-4020-5 $155.95

142069 $717.46

365

4.030

3.580

6.125

9.585

1.670

11.1

10.5

9.9

-5cc

489
 -

0.030

S100S8-4030-5 $155.95

142070 $717.46

367

4.040

3.580

6.125

9.585

1.670

11.1

10.5

10.0

-5cc

497
 -

0.040

S100S8-4040-5 $155.95

142071 $717.46

371

4.060

3.580

6.125

9.585

1.670

11.2

10.6

10.0

-5cc

503

M

0.060

S100S8-4060-5 $155.95

345797 $717.46

373

4.070

3.580

6.125

9.585

1.670

11.2

10.6

10.0

-5cc

NEW

M

0.070

J100F8-4070-5 $261.11

345798 $717.46

374

4.080

3.580

6.125

9.585

1.670

11.3

10.7

10.1

-5cc

NEW

M

0.080

J100F8-4080-5 $261.11


340 Stroker Inverted Dome Std Bore: 4.040 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

60cc

65cc

70cc

Compression Ratio

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

220157 $804.57

410

4.040

4.000

6.125

9.585

1.460

10.8

10.3

9.8

-16.9cc

462
 -

STD

S100S8-4040-5 $155.95

335151 $804.57

414

4.060

4.000

6.125

9.585

1.460

10.9

10.3

9.8

-16.9cc

470
 -

0.020

S100S8-4060-5 $155.95

335152 $804.57

416

4.070

4.000

6.125

9.585

1.460

10.9

10.4

9.9

-16.9cc

474
 -

0.030

J100F8-4070-5 $261.11

335153 $804.57

418

4.080

4.000

6.125

9.585

1.460

11.0

10.4

9.9

-16.9cc

478
 -

0.040

J100F8-4080-5 $261.11


360 Stroker Inverted Dome Std Bore: 4.000 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

60cc

65cc

70cc

Compression Ratio

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

345789 $804.57

406

4.020

4.000

6.125

9.585

1.460

10.6

10.1

9.6

-16.9cc

NEW
 -

STD

S100S8-4020-5 $155.95

220156 $804.57

408

4.030

4.000

6.125

9.585

1.460

10.7

10.2

9.7

-16.9cc

457
 -

0.030

S100S8-4030-5 $155.95

220157 $804.57

410

4.040

4.000

6.125

9.585

1.460

10.8

10.3

9.8

-16.9cc

462
 -

0.040

S100S8-4040-5 $155.95

335151 $804.57

414

4.060

4.000

6.125

9.585

1.460

10.9

10.3

9.8

-16.9cc

470
 -

0.060

S100S8-4060-5 $155.95

335152 $804.57

416

4.070

4.000

6.125

9.585

1.460

10.9

10.4

9.9

-16.9cc

474
 -

0.070

J100F8-4070-5 $261.11

335153 $804.57

418

4.080

4.000

6.125

9.585

1.460

11.0

10.4

9.9

-16.9cc

478
 -

0.080

J100F8-4080-5 $261.11

400 / 440 BIG BLOCK WEDGE













4032 low expansion high silicon aluminum alloy heat treated to SRP specifications Forced Pin Oiler for increased wrist pin lubrication Pin fitting and double spiro locks included CNC Machined ring grooves accept 1/16, 1/16, 3/16 rings (Rings Sold Seperately) 1.094 x 2.930 x .150 straight wall wrist pin included (170 grams) Note H .990 x 2.930 x .150 straight wall wrist pin included (150 grams) Note E Redesigned valve pockets for larger valves and high-lift cams 


400 Flat Top Std Bore: 4.345 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

72cc

80cc

84cc

Compression Ratio

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

213453 $778.51

462

4.375

3.750

6.768

9.963

1.320

11.4

10.5

10.1

-6cc

558

E

0.030

J100F8-4375-5 $275.44




440 Flat Top Std Bore: 4.320 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

72cc

80cc

84cc

Compression Ratio

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

231521 $778.51

493

4.350

4.150

6.768

10.708

1.865

12.4

11.4

11.0

-6cc

656

E

0.030

S100S8-4350-5 $155.95

345799 $778.51

496

4.360

4.150

6.768

10.708

1.865

12.4

11.4

11.0

-6cc

NEW

E, M

0.040

S100S8-4360-5 $155.95

213459 $778.51

499

4.375

4.150

6.768

10.708

1.865

12.5

11.5

11.1

-6cc

670

E

0.055

J100F8-4375-5 $275.44

213455 $778.51

445

4.350

3.750

6.768

10.705

2.062

11.4

10.5

10.1

-6cc

690

H

0.030

S100S8-4350-5 $155.95

213456 $778.51

447

4.360

3.750

6.768

10.705

2.062

11.4

10.5

10.1

-6cc

699

H

0.040

J100F8-4360-5 $254.76

213457 $778.51

450

4.375

3.750

6.768

10.705

2.062

11.4

10.5

10.1

-6cc

701

H

0.055

J100F8-4375-5 $275.44

213458 $778.51

450

4.375

3.750

6.768

10.705

2.062

11.4

10.5

10.1

-6cc

707

E

0.055

J100F8-4375-5 $275.44
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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