LS2 / LS3 / LS6 / L92: Inverted Dome Professional Series
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
- Compatible with GM L92 Cylinder Heads
- Now includes high performance skirt coating!
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RINGS INCLUDED
- Lightweight, low friction metric ring package included
- 1.2mm top ring, 1.5mm Napier 2nd ring, 3.0mm standard tension oil ring
- Napier 2nd ring for improved oil control
- Minimal filing required
PINS AND LOCKS
- High quality 2.250" pin further reduces reciprocating weight
- Carbon steel wire locks included
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LS2 / LS3 / LS6 / L92: Inverted Dome Professional Series
Std Bore: 4.000 (LS2/LS6), 4.065 (LS3)
Ring package: 1.2mm, 1.5mm, 3.0mm Premium Rings Included
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| Part # |
CID |
Bore |
Stroke |
Rod
Lgth. |
Block
Ht. |
Comp.
Ht. |
| Head Cubic Centimeters |
| 64cc |
66cc |
72cc |
| Compression Ratio |
|
Dome
Vol. |
Gram
Wt. |
Footnote |
Oversize |
Recom.
Ring Set |
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| 271100 |
403 |
4.005 |
4.000 |
6.125 |
9.240 |
1.115 |
11.0 |
10.7 |
10.1 |
-10 |
399 |
B |
0.005 |
JG3108-4000-7 |
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| 271102 |
408 |
4.030 |
4.000 |
6.125 |
9.240 |
1.115 |
11.1 |
10.8 |
10.2 |
-10 |
406 |
B |
0.030 |
JG31F8-4030-2 |
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| 271105 |
416 |
4.065 |
4.000 |
6.125 |
9.240 |
1.115 |
11.2 |
11.0 |
10.3 |
-10 |
418 |
B,M |
STD LS3 |
JG31F8-4070-0 |
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| 279525 |
416 |
4.070 |
4.000 |
6.125 |
9.240 |
1.115 |
11.3 |
11.0 |
10.4 |
-10 |
420 |
B |
.005 LS3 |
JG31F8-4070-0 |
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| 287994 |
364 |
4.000 |
3.622 |
6.098 |
9.240 |
1.340 |
9.6 |
9.4 |
8.8 |
-14.3 |
429 |
K,M |
STD |
JG3108-4000-7 |
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| 288003 |
364 |
4.000 |
3.622 |
6.125 |
9.240 |
1.315 |
9.6 |
9.4 |
8.8 |
-14.3 |
427 |
C,M |
STD |
JG3108-4000-7 |
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| 288004 |
365 |
4.005 |
3.622 |
6.125 |
9.240 |
1.315 |
9.6 |
9.4 |
8.9 |
-14.3 |
428 |
C,M |
0.005 |
JG3108-4000-7 |
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| 287995 |
365 |
4.005 |
3.622 |
6.098 |
9.240 |
1.340 |
9.6 |
9.4 |
8.9 |
-14.3 |
431 |
K,M |
0.005 |
JG3108-4000-7 |
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| 287996 |
370 |
4.030 |
3.622 |
6.098 |
9.240 |
1.340 |
9.6 |
9.4 |
8.8 |
-15.5 |
442 |
K,M |
0.030 |
JG31F8-4030-2 |
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| 288005 |
370 |
4.030 |
3.622 |
6.125 |
9.240 |
1.315 |
9.6 |
9.4 |
8.8 |
-15.5 |
437 |
C,M |
0.030 |
JG31F8-4030-2 |
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| 288006 |
376 |
4.065 |
3.622 |
6.125 |
9.240 |
1.315 |
9.6 |
9.4 |
8.9 |
-17.2 |
445 |
C,M |
STD LS3 |
JG31F8-4070-0 |
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| 287997 |
376 |
4.065 |
3.622 |
6.098 |
9.240 |
1.340 |
9.6 |
9.4 |
8.9 |
-17.2 |
448 |
K,M |
STD LS3 |
JG31F8-4070-0 |
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| 287999 |
377 |
4.070 |
3.622 |
6.098 |
9.240 |
1.340 |
9.6 |
9.4 |
8.9 |
-17.2 |
450 |
K |
0.005 |
JG31F8-4070-0 |
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| 288007 |
377 |
4.070 |
3.622 |
6.125 |
9.240 |
1.315 |
9.6 |
9.4 |
8.9 |
-17.2 |
447 |
C,M |
0.005 |
JG31F8-4070-0 |
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- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.