CHEVY 400 23° INVERTED DOME (CONTINUED)
PROFESSIONAL SERIES INVERTED DOME - 400 BLOCK
Std Bore: 4.125
Ring package designed for: 1 .2mm, 1.5mm, 3.0mm Premium Rings Included
Head Cubic Centimeters
58cc 64cc
70cc
Cubic Inches
Bore Size
Stroke
Rod Length
Comp. Distance
329520
374
4.135
3.480
6.125
1.125
10.2
9.6
9.0
-16.0
271069
377
4.155
3.480
6.125
1.125
10.3
9.6
9.1
-16.0
Compression Ratio
Footnote
Oversize
Ring Set Included
JE Pro Seal Head Gasket
387
A,B,M
.010
JG31F8-4135-2
GM1004-039
391
A,B
.030
JG31F8-4155-3
GM1004-039
Dome Gram Volume Weight
Part #
CHEVY 305 SPRINT CAR FLAT TOP
PROFESSIONAL SERIES FLAT TOP - 305 BLOCK
RINGS INCLUDED
PINS AND LOCKS:
• Lightweight, low friction 1.2mm, 1.2mm, 2.5mm ring package included • Top Ring: Chrome steel, 2nd ring: cast taper, Oil ring: standard tension • File-to-fit
• High quality .927” X 2.250” pin further reduces reciprocating weight
Std Bore: 3.736
• Carbon steel wire locks included
Ring package designed for: 1.2mm, 1.2mm, 2.5mm Premium Rings Included
Head Cubic Centimeters
Cubic Inches
Part #
Bore Size
Stroke
Rod Length
Comp. Distance
62cc
Compression Ratio
Dome Gram Volume Weight
Footnote
Oversize
Ring Set Included
306842
308
3.756
3.480
5.700
1.560
9.7
-3.1
378
2618
.020
JC2808-3760
293532
310
3.766
3.480
5.700
1.560
9.7
-3.1
378
2618
.030
JC2808-3770
293533
312
3.776
3.480
5.700
1.560
9.7
-3.1
381
2618
.040
JC2808-3780
295562
313
3.786
3.480
5.700
1.560
9.8
-3.1
385
2618
.050
JC2808-3789
293534
315
3.796
3.480
5.700
1.560
9.8
-3.1
389
2618
.060
JC2808-3800
JE Pro Seal Head Gasket
CHEVY PERFORMANCE 602 & 604 CRATE ENGINE Give your 602 or 604 crate engine an extra edge by upgrading to lowfriction, lightweight SRP Professional pistons. The forged FSR design provides increased durability when compared to the standard crate pistons. Piston crown retains the appearance of the original pistons.
RINGS INCLUDED
PINS AND LOCKS:
• Lightweight, low friction metric ring package included
• High quality 2.250” pin further reduces reciprocating weight
• 1.2mm CARBON STEEL top ring, 1.5mm Napier 2nd ring, 3.0mm standard tension oil ring
• Carbon steel wire locks included
• Minimal filing required
GM 602 CRATE REPLACEMENT SERIES (4 VALVE DISH) Head Cubic Centimeters
58cc 64cc
70cc
Dome Gram Volume Weight
Oversize
Ring Set Included
JE Pro Seal Head Gasket
.005
JG3108-4000-7
GM1024-039
.020
JG3108-4020-2
GM1024-039
.030
JG31F8-4030-2
GM1024-039
.005
JG3108-4000-7
GM1024-039
M
.020
JG3108-4020-2
GM1024-039
M
.030
JG31F8-4030-2
GM1024-039
Footnote
Oversize
Ring Set Recommended
JE Pro Seal Head Gasket
Part #
Cubic Inches
Bore Size
Stroke
Rod Length
Comp. Distance
324858
351
4.005
3.480
5.700
1.560
10.3:1
9.7:1
9.1:1
-10.0
324859
353
4.020
3.480
5.700
1.560
10.4:1
9.7:1
9.1:1
-10.0
479
M
324860
355
4.030
3.480
5.700
1.560
10.4:1
9.8:1
9.2:1
-10.0
480
M
324861
378
4.005
3.750
6.000
1.125
11.1:1
10.3:1
9.7:1
-10.0
417
324862
381
4.020
3.750
6.000
1.125
11.1:1
10.4:1
9.8:1
-10.0
427
324863
383
4.030
3.750
6.000
1.125
11.2:1
10.4:1
9.8:1
-10.0
430
Compression Ratio
Footnote
GM 604 CRATE REPLACEMENT SERIES (4 VALVE DISH) Head Cubic Centimeters
Part #
Cubic Inches
Bore Size
324864
351
324865
353
324866
58cc 64cc
70cc
Dome Gram Volume Weight
Stroke
Rod Length
Comp. Distance
4.005
3.480
5.700
1.560
11.1:1
10.3:1
9.6:1
-4.5
484
.005
JG3108-4000-7
GM1024-039
4.020
3.480
5.700
1.560
11.1:1
10.3:1
9.7:1
-4.5
492
M
.020
JG3108-4020-2
GM1024-039
355
4.030
3.480
5.700
1.560
11.2:1
10.4:1
9.7:1
-4.5
496
M
.030
JG31F8-4030-2
GM1024-039
324867
378
4.005
3.750
6.000
1.125
11.8:1
11.0:1
10.3:1
-4.5
432
.005
JG3108-4000-7
GM1024-039
324868
381
4.020
3.750
6.000
1.125
11.9:1
11.1:1
10.3:1
-4.5
441
M
.020
JG3108-4020-2
GM1024-039
324869
383
4.030
3.750
6.000
1.125
12.0:1
11.1:1
10.4:1
-4.5
442
M
.030
JG31F8-4030-2
GM1024-039
Compression Ratio
FOOTNOTES: 2618 = 2618 Aluminum Forging, A = Fits 3.480 and 3.500 stroke, B = Oil Rail Support is Included, M = Made to Order
JEpistons.com
79
SRP PROFESSIONAL
Specifically designed for alcohol Sprint Car competition. Advanced, lightweight FSR forging. Stronger than traditional designs but up to 20% lighter. Forged from low-silicon wrought 2618 aluminum alloy Accumulator grooves for improved ring seal.