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LS2 / LS3 / LS6 / L92: Flat Top 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 or 2618 options available.
  • 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: 4032 Series - Flat Top Professional Series
Std Bore: 4.000 (LS2/LS6), 4.065 (LS3)
Ring package designed for: 1.2mm, 1.5mm, 3.0mm Premium Rings Included

4032 Series

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
329370 402 4.000 4.000 6.125 9.240 1.115 11.6 11.3 10.6 -5 384 B .005 JG3108-4010-4
279585 403 4.005 4.000 6.125 9.240 1.115 11.6 11.3 10.6 -5 385 B 0.005
329371 404 4.010 4.000 6.125 9.240 1.115 11.6 11.3 10.6 -5 390 B .010 JG3108-4010-4
279586 408 4.030 4.000 6.125 9.240 1.115 11.7 11.5 10.7 -5 393 B 0.030
279587 416 4.065 4.000 6.125 9.240 1.115 11.9 11.6 10.9 -5 404 B STD LS3
279589 416 4.070 4.000 6.125 9.240 1.115 12.0 11.7 10.9 -5 405 B .005 LS3
329372 417 4.075 4.000 6.125 9.240 1.115 12.0 11.7 10.9 -5 407 B .010 LS3 JG31F8-4075-5
298766 418 4.080 4.000 6.125 9.240 1.115 12.0 11.7 10.9 -5 410 .015 LS3
326279 419 4.085 4.000 6.125 9.240 1.115 12.0 11.7 10.9 -5 413 M .020 LS3 J75008-4080-5
329373 364 4.000 3.622 6.125 9.251 1.315 10.6 10.4 9.7 -5 415 M STD JG3108-4000-7
329375 364 4.000 3.622 6.098 9.249 1.340 10.5 10.3 9.7 -5 420 K STD JG3108-4000-7
329376 365 4.005 3.622 6.098 9.249 1.340 10.6 10.3 9.7 -5 423 K .005 JG3108-4000-7
279590 365 4.005 3.622 6.125 9.240 1.315 10.6 10.4 9.7 -5 417 0.005
329374 366 4.010 3.622 6.125 9.251 1.315 10.6 10.4 9.8 -5 420 M .010 JG3108-4010-4
329377 366 4.010 3.622 6.098 9.249 1.340 10.6 10.4 9.7 -5 425 K,M .010 JG3108-4010-4
329378 370 4.030 3.622 6.098 9.249 1.340 10.7 10.4 9.8 -5 431 K,M .030 JG31F8-4030-2
279591 370 4.030 3.622 6.125 9.240 1.315 10.7 10.4 9.8 -5 426 0.060
279592 376 4.065 3.622 6.125 9.240 1.315 10.9 10.6 10.0 -5 440 M STD LS3
329379 376 4.065 3.622 6.098 9.249 1.340 10.8 10.6 9.9 -5 438 K STD LS3 JG31F8-4070-0
279593 377 4.070 3.622 6.125 9.240 1.315 10.9 10.6 10.0 -5 439 .005 LS3
298616 377 4.070 3.622 6.098 9.240 1.340 10.9 10.6 10.0 -5 445 K .005 LS3 JG31F8-4070-0
325258 378 4.075 3.622 6.125 9.240 1.315 10.9 10.6 10.0 -5 443 M .010 LS3 JG31F8-4075-5
329380 378 4.075 3.622 6.098 9.249 1.340 10.9 10.6 10.0 -5 443 K,M .010 LS3 JG31F8-4075-5
325259 379 4.080 3.622 6.125 9.240 1.315 10.9 10.7 10.0 -5 447 M .015 LS3 JG31F8-4075-5
298617 379 4.080 3.622 6.098 9.240 1.340 10.9 10.6 10.0 -5 440 K .015 LS3


LS2 / LS3 / LS6 / L92: 2618 Series - Flat Top Professional Series
Std Bore: 4.000 (LS2/LS6), 4.065 (LS3)
Ring package designed for: 1.2mm, 1.5mm, 3.0mm Premium Rings Included

2618 Series

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
361027 402 4.000 4.000 6.125 9.240 1.115 11.6:1 11.3:1 10.6:1 -5 384 2618 STD JG3108-4000-7
361028 403 4.005 4.000 6.125 9.240 1.115 11.6:1 11.3:1 10.6:1 -5 385 2618 .005 JG3108-4000-7
361029 404 4.010 4.000 6.125 9.240 1.115 11.6:1 11.4:1 10.7:1 -5 990 2618 .010 JG3108-4010-4
361030 408 4.030 4.000 6.125 9.240 1.115 11.7:1 11.5:1 10.7:1 -5 393 2618 .030 JG31F8-4030-5
361031 416 4.065 4.000 6.125 9.240 1.115 11.9:1 11.6:1 10.9:1 -5 404 2618 STD LS3 JG31F8-4070-0
361032 416 4.070 4.000 6.125 9.240 1.115 12.0:1 11.7:1 10.9:1 -5 405 2618 .005 JG31F8-4070-0
361033 417 4.075 4.000 6.125 9.240 1.115 12.0:1 11.7:1 10.9:1 -5 407 2618 .010 JG31F8-4075-5
361020 364 4.000 3.622 6.125 9.240 1.315 10.6:1 10.4:1 9.7:1 -5 415 2618 STD JG3108-4000-7
361012 364 4.000 3.622 6.098 9.240 1.340 10.5:1 10.3:1 9.7:1 -5 420 2618 STD JG3108-4000-7
361013 365 4.005 3.622 6.098 9.240 1.340 10.6:1 10.3:1 9.7:1 -5 423 2618 .005 JG3108-4000-7
361021 365 4.005 3.622 6.125 9.240 1.315 10.6:1 10.4:1 9.7:1 -5 417 2618 .005 JG3108-4000-7
361022 366 4.010 3.622 6.125 9.240 1.315 10.6:1 10.4:1 9.8:1 -5 420 2618 .010 JG3108-4010-4
361014 366 4.010 3.622 6.098 9.240 1.340 10.6:1 10.4:1 9.7:1 -5 425 2618 .010 JG3108-4010-4
361015 370 4.030 3.622 6.098 9.240 1.340 10.7:1 10.4:1 9.8:1 -5 431 2618 .030 JG31F8-4030-5
361023 370 4.030 3.622 6.125 9.240 1.315 10.7:1 10.4:1 9.8:1 -5 426 2618 .030 JG31F8-4030-5
361024 376 4.065 3.622 6.125 9.240 1.315 10.9:1 10.6:1 10.0:1 -5 440 2618 STD LS3 JG31F8-4070-0
361017 376 4.065 3.622 6.098 9.240 1.340 10.8:1 10.6:1 9.9:1 -5 438 2618 STD LS3 JG31F8-4070-0
361018 377 4.070 3.622 6.098 9.240 1.340 10.9:1 10.6:1 10.0:1 -5 440 2618 .005 JG31F8-4070-0
361025 377 4.070 3.622 6.125 9.240 1.315 10.9:1 10.6:1 10.0:1 -5 439 2618 .005 JG31F8-4070-0
361026 378 4.075 3.622 6.125 9.240 1.315 10.9:1 10.6:1 10.0:1 -5 443 2618 .010 JG31F8-4075-5
361019 378 4.075 3.622 6.098 9.240 1.340 10.9:1 10.6:1 10.0:1 -5 443 2618 .010 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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