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 24-7

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Chevrolet Big Block
Call toll free to order at 1-866-700-5877 or
Contact us anytime 24-7 or use the Order Form for questions and to check stock.

BIG BLOCK FLAT TOP FORGED PISTONS
BIG BLOCK FLAT TOP

T








hese big block pistons are compatible with forced induction, nitrous and angle milled heads.
Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams.
Compression Height figured using 9.780" block height with zero deck clearance.
Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings.
Will fit both open and closed chamber cylinder heads.
Includes: Pin #990-2930-18-51S $18.01 (174g) Double spiro locks (#990-042-CS)

BIG BLOCK CHEVY FLAT TOP SERIES Std Bore: 427/454 = 4.250, 502 BBC = 4.466 Ring package designed for: 1/16, 1/16, 3/16 Rings

R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R> R>

Part #
Your Cost

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters
Comp Ratio

110---118--124

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

257977 $1,190.67

489

4.280

4.250

6.135

9.780

1.520

9.1

8.6

8.3

-3.0

595

M

0.030

J100F8-4280-5 $265.10

257974 $1,190.67

496

4.310

4.250

6.135

9.780

1.520

9.2

8.7

8.4

-3.0

611
.

0.060

J100F8-4310-5 $265.10

257964 $1,190.67

496

4.310

4.250

6.385

9.780

1.270

9.2

8.7

8.4

-3.0

558

B

0.060

J100F8-4310-5 $265.10

257965 $1,190.67

540

4.500

4.250

6.385

9.780

1.270

10.0

9.4

9.1

-3.0

617

B

0.034

J100F8-4500-5 $315.78

257975 $1,190.67

540

4.500

4.250

6.135

9.780

1.520

10.0

9.4

9.1

-3.0

667
.

0.034

J100F8-4500-5 $315.78

338236 $1,190.67

541

4.500

4.250

6.535

9.780

1.120

10.0

9.4

9.0

-3.0

NEW

B,U,M

0.034

J100F8-4500-5 $315.78

338237 $1,190.67

548

4.530

4.250

6.535

9.780

1.120

10.1

9.5

9.1

-3.0

NEW

B,U,M

0.064

J100F8-4530-5 $315.78

257976 $1,190.67

548

4.530

4.250

6.135

9.780

1.520

10.1

9.6

9.2

-3.0

681

M

0.064

J100F8-4530-5 $315.78

257966 $1,190.67

548

4.530

4.250

6.385

9.780

1.270

10.1

9.6

9.2

-3.0

626

B

0.064

J100F8-4530-5 $315.78

257967 $1,190.67

555

4.560

4.250

6.385

9.780

1.270

10.2

9.7

9.3

-3.0

643

B

0.094

J100S8-4560-5 $324.87

257978 $1,190.67

555

4.560

4.250

6.135

9.780

1.520

10.2

9.7

9.3

-3.0

686
.

0.094

J100S8-4560-5 $324.87

338238 $1,190.67

555

4.560

4.250

6.535

9.780

1.120

10.2

9.6

9.2

-3.0

NEW

B,U,M

0.094

J100S8-4560-5 $324.87

281959 $1,190.67

565

4.600

4.250

6.535

9.780

1.120

10.3

9.7

9.3

-3.0

589

B,U

0.134

J100U8-4600-5 $313.21

257968 $1,190.67

565

4.600

4.250

6.385

9.780

1.270

10.3

9.8

9.4

-3.0

639

B

0.134

J100L8-4600-5 $209.26

281960 $1,190.67

568

4.610

4.250

6.535

9.780

1.120

10.3

9.8

9.4

-3.0

590

B,U

0.144

J100H8-4610-5 $460.03

282039 $1,115.22

588

4.610

4.250

6.385

9.780

1.270

10.3

9.8

9.4

-3.0

648

B

0.144

J100H8-4610-5 $460.03

282040 $1,115.22

571

4.625

4.250

6.385

9.780

1.270

10.4

9.8

9.4

-3.0

654

B

0.159

J100F8-4625-5 $204.00

281961 $1,190.67

571

4.625

4.250

6.535

9.780

1.120

10.4

9.8

9.4

-3.0

597

B,U,M

0.159

J100F8-4625-5 $204.00

257979 $1,190.67

455

4.255

4.000

6.135

9.775

1.640

8.6

8.1

7.8

-3.0

605

M

0.005

J100F8-4250-5 $265.10

257980 $1,190.67

460

4.280

4.000

6.135

9.775

1.640

8.7

8.2

7.9

-3.0

618
.

0.030

J100F8-4280-5 $265.10

257969 $1,190.67

460

4.280

4.000

6.385

9.780

1.395

8.7

8.2

7.9

-3.0

574
.

0.030

J100F8-4280-5 $265.10

257970 $1,190.67

467

4.310

4.000

6.385

9.780

1.395

8.8

8.3

8.0

-3.0

580
.

0.060

J100F8-4310-5 $265.10

257981 $1,190.67

467

4.310

4.000

6.135

9.775

1.640

8.8

8.3

8.0

-3.0

631
.

0.060

J100F8-4310-5 $265.10

257960 $1,190.67

467

4.310

4.000

6.535

9.780

1.245

8.8

8.3

8.0

-3.0

560

B,M

0.060

J100F8-4310-5 $265.10

257983 $1,190.67

501

4.466

4.000

6.135

9.780

1.645

9.3

8.8

8.4

-3.0

682

M

0.000

J100S8-4470-5 $281.98

257984 $1,190.67

509

4.500

4.000

6.135

9.780

1.645

9.5

9.0

8.6

-3.0

690
.

0.034

J100F8-4500-5 $315.78

257971 $1,190.67

509

4.500

4.000

6.385

9.780

1.395

9.5

9.0

8.6

-3.0

637
.

0.034

J100F8-4500-5 $315.78

257961 $1,190.67

509

4.500

4.000

6.535

9.780

1.245

9.5

9.0

8.6

-3.0

611

B

0.034

J100F8-4500-5 $315.78

257972 $1,190.67

516

4.530

4.000

6.385

9.780

1.395

9.6

9.1

8.7

-3.0

647
.

0.064

J100F8-4530-5 $315.78

257985 $1,190.67

515

4.530

4.000

6.135

9.780

1.645

9.6

9.1

8.7

-3.0

702
.

0.064

J100F8-4530-5 $315.78

257986 $1,190.67

522

4.560

4.000

6.135

9.780

1.645

9.7

9.2

8.8

-3.0

714
.

0.094

J100H8-4560-5 $324.87

257973 $1,190.67

523

4.560

4.000

6.385

9.780

1.395

9.7

9.2

8.8

-3.0

662
.

0.094

J100S8-4560-5 $324.87

257962 $1,190.67

522

4.560

4.000

6.535

9.780

1.245

9.7

9.2

8.8

-3.0

634

B,M

0.094

J100S8-4560-5 $324.87

257963 $1,190.67

532

4.600

4.000

6.535

9.780

1.245

9.8

9.2

8.9

-3.0

631

B

0.134

J100L8-4600-5 $209.26

257987 $1,190.67

433

4.280

3.766

6.135

9.783

1.765

8.2

7.8

7.5

-3.0

649
.

0.030

J100F8-4280-5 $265.10

257988 $1,190.67

439

4.310

3.766

6.135

9.783

1.765

8.3

7.9

7.6

-3.0

653
.

0.060

J100F8-4310-5 $265.10

257974 $1,190.67

439

4.310

3.766

6.385

9.788

1.520

8.3

7.9

7.6

-3.0

611
.

0.060

J100F8-4310-5 $265.10

257989 $1,190.67

441

4.320

3.766

6.135

9.783

1.765

8.3

7.9

7.6

-3.0

663

M

0.070

J100F8-4320-5 $270.34

257975 $1,190.67

479

4.500

3.766

6.385

9.788

1.520

9.0

8.5

8.2

-3.0

673
.

0.034

J100F8-4500-5 $315.78

257976 $1,190.67

486

4.530

3.766

6.385

9.788

1.520

9.1

8.6

8.2

-3.0

381

M

0.064

J100F8-4530-5 $315.78

Foot Notes:
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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