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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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

15º LS1
We have redesigned and expanded our GM LS1 series product lines!
These new pistons utilized our dedicated Forged Side Relief (FSR) forging that was specifically designed for the demands of the GM LS1 series of engines.
In addition we have found ways to reduce weight and maintain the durability needed for both street and racing use.
(CR calculated with .051" gasket thickness and +.009-.011" deck clearance).
Lightweight and extremely durable, these pistons are machined for 1.5mm, 1.5mm, 3.0mm rings.
Includes:
927-2250-15-51C $18.01 (106g) wrist pins included, note C
945-2200-15-51C (105g) wrist pins included, note K
Wire locks included, #945-073-MW
LS1 Series - FSR Series Std Bore: 3.898 FSR Series Uses 2.250 length pins Ring package designed for: 1.5, 1.5, 3mm Rings

Part #
Your Cost

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters
Comp Ratio
64---66--72

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

http://www.jepistons.com/Images/1x1.gif

326374 $833.12

382

3.898

4.000

6.125

9.240

1.115

8.6

8.5

8.1

-29.9

399

B,C,M

STD

JG6008-3905 $170.27

326376 $833.12

382

3.898

4.000

6.125

9.240

1.115

11.5

11.2

10.5

-2.0

412

B,C,M

STD

JG6008-3905 $170.27

321247 $833.12

382

3.898

4.000

6.200

9.250

1.050

11.5

11.2

10.5

-2.0

405

B,C,M

STD

JG6008-3905 $170.27

326375 $833.12

383

3.905

4.000

6.125

9.240

1.115

8.6

8.5

8.1

-30.2

401

B,C,M

.007

JG6008-3905 $170.27

264041 $1,115.22

383

3.905

4.000

6.125

9.240

1.115

10.5

10.3

9.7

-10.0

382

B,C,M

.007

J68008-3900-3 $371.71

326377 $833.12

383

3.905

4.000

6.125

9.240

1.115

11.5

11.2

10.5

-2.0

414

B,C,M

.007

JG6008-3905 $170.27

321248 $833.12

383

3.905

4.000

6.200

9.250

1.050

11.5

11.2

10.5

-2.0

407

B,C,M

.007

JG6008-3905 $170.27

321245 $833.12

372

3.898

3.900

6.125

9.250

1.175

11.2

10.9

10.2

-2.0

421

C,M

STD

JG6008-3905 $170.27

321246 $833.12

374

3.905

3.900

6.125

9.250

1.175

11.2

11.0

10.2

-2.0

423

C,M

.007

JG6008-3905 $170.27

321241 $833.12

346

3.898

3.622

6.125

9.251

1.315

8.7

8.5

8.0

-19.9

Call

C

STD

JG6008-3905 $170.27

321237 $833.12

346

3.898

3.622

6.098

9.249

1.340

8.7

8.5

8.0

-19.5

419

K

STD

JG6008-3905 $170.27

321239 $833.12

346

3.898

3.622

6.098

9.249

1.340

10.4

10.2

9.6

-2.0

439

K

STD

JG6008-3905 $170.27

321243 $833.12

346

3.898

3.622

6.125

9.251

1.315

10.5

10.2

9.6

-2.0

432

C

STD

JG6008-3905 $170.27

321238 $833.12

347

3.905

3.622

6.098

9.249

1.340

8.7

8.5

8.0

-21.8

421

K

.007

JG6008-3905 $170.27

321242 $833.12

347

3.905

3.622

6.125

9.251

1.315

8.7

8.5

8.0

-20.2

Call

C

.007

JG6008-3905 $170.27

321244 $833.12

347

3.905

3.622

6.125

9.251

1.315

10.5

10.3

9.6

-2.0

434

C

.007

JG6008-3905 $170.27

321240 $833.12

347

3.905

3.622

6.098

9.249

1.340

10.4

10.2

9.6

-2.0

439

K

.007

JG6008-3905 $170.27


LS1 Series - Full Round Series Std Bore: 3.899 Full Round Series
Uses 2.500 length pins Ring package designed for: 1.5, 1.5, 3mm Rings

Part #
Your Cost

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters
Comp Ratio
64---66--72

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

194881 $1,082.73

383

3.905

4.000

6.200

9.250

1.050

11.5

11.3

10.5

-2.0

390

B,C

0.007

J68008-3900-3 $371.71

194882 $1,082.73

373

3.905

3.900

6.125

9.250

1.175

11.3

11.0

10.3

-2.0

410

C, M

0.007

J68008-3900-3 $371.71

194883 $1,082.73

347

3.905

3.622

6.125

9.251

1.315

10.6

10.3

9.6

-2.0

428

C

0.007

J68008-3900-3 $371.71

194884 $1,082.73

347

3.905

3.622

6.098

9.249

1.340

10.6

10.3

9.6

-2.0

434

K

0.007

J68008-3900-3 $371.71

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