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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
  • 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 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
LS2 / LS3 / LS6 / L92: 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
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
279585 403 4.005 4.000 6.125 9.240 1.115 11.6 11.3 10.6 -5 385 B 0.005 JG3108-4000-7
279586 408 4.030 4.000 6.125 9.240 1.115 11.7 11.5 10.7 -5 393 B 0.030 JG31F8-4030-2
279587 416 4.065 4.000 6.125 9.240 1.115 11.9 11.6 10.9 -5 404 B STD LS3 JG31F8-4070-0
279589 416 4.070 4.000 6.125 9.240 1.115 12.0 11.7 10.9 -5 405 B .005 LS3 JG31F8-4070-0
279590 365 4.005 3.622 6.125 9.251 1.315 10.6 10.4 9.7 -5 417 0.005 JG3108-4000-7
279591 370 4.030 3.622 6.125 9.251 1.315 10.7 10.4 9.8 -5 426 0.060 JG31F8-4030-2
279592 376 4.065 3.622 6.125 9.251 1.315 10.9 10.6 10.0 -5 440 STD LS3 JG31F8-4070-0
279593 377 4.070 3.622 6.125 9.251 1.315 10.9 10.6 10.0 -5 439 .005 LS3 JG31F8-4070-0

- 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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