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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!
    RINGS INCLUDED
  • Lightweight, low friction metric ring package included
  • 1.2mm top ring, 1.5mm 2nd ring, 3.0mm standard tension oil ring
  • Minimal filing required

    PINS AND LOCKS
  • High quality 2.250" pin further reduces reciprocating weight
  • Carbon steel wire locks included
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

Click here to see matching JE Pro Seal Head Gaskets!
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
329358 402 4.000 4.000 6.125 9.240 1.115 11.0 10.7 10.1 -10.0 398 B STD JG3108-4000-7
271100 403 4.005 4.000 6.125 9.240 1.115 11.0 10.7 10.1 -10 399 B 0.005
329359 404 4.010 4.000 6.125 9.240 1.115 11.0 10.7 10.1 -10.0 405 B .010 JG3108-4010-4
271102 408 4.030 4.000 6.125 9.240 1.115 11.1 10.8 10.2 -10 406 B 0.030
271105 416 4.065 4.000 6.125 9.240 1.115 11.2 11.0 10.3 -10 418 B,M STD LS3
279525 416 4.070 4.000 6.125 9.240 1.115 11.3 11.0 10.4 -10 420 B .005 LS3
329360 417 4.075 4.000 6.125 9.240 1.115 11.3 11.0 10.4 -10.0 424 B .010 LS3 JG31F8-4075-5
329361 418 4.080 4.000 6.125 9.240 1.115 11.3 11.0 10.4 -10.0 428 B .015 LS3 JG31F8-4075-5
287994 364 4.000 3.622 6.098 9.240 1.340 9.6 9.4 8.8 -14.3 429 K,M STD
288003 364 4.000 3.622 6.125 9.240 1.315 9.6 9.4 8.8 -14.3 427 C,M STD
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
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
329352 366 4.010 3.622 6.098 9.240 1.340 9.6 9.4 8.9 -14.4 435 K,M .010 JG3108-4010-4
329355 366 4.010 3.622 6.125 9.240 1.315 9.6 9.4 8.9 -14.4 430 C .010 JG3108-4010-4
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
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
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
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
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
287999 377 4.070 3.622 6.098 9.240 1.340 9.6 9.4 8.9 -17.2 450 K 0.005
329356 378 4.075 3.622 6.125 9.240 1.315 9.6 9.4 8.9 -17.2 450 C,M .010 LS3 JG31F8-4075-5
329353 378 4.075 3.622 6.098 9.240 1.340 9.6 9.4 8.9 -17.2 452 K,M .010 LS3 JG31F8-4075-5
329354 379 4.080 3.622 6.098 9.240 1.340 9.6 9.4 8.9 -17.2 455 K,M .015 LS3 JG31F8-4075-5
329357 379 4.080 3.622 6.125 9.240 1.315 9.6 9.4 8.9 -17.2 454 C,M .015 LS3 JG31F8-4075-5

- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.


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