SMALL BLOCK CHEVY
BIG BLOCK CHEVY
FORD
MOPAR
PONTIAC
HONDA/ACURA
350 FLAT TOP

    PISTONS 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

    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
  • Standard fit rings, no filing required

    PINS AND LOCKS

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

Professional Series
Std Bore: 4.000
Ring package designed for: Rings Included
Part # Cubic
Inches		 Bore Stroke Rod
Length		 Compression
Distance
Head Cubic Centimeters
58cc 64cc 70cc
Compression Ratio
Dome
Volume		 Gram
Weight		 Footnote Oversize Ring Set#
271054 408 4.030 4.000 6.000 1.000 12.6 11.7 11.0 -5 372 B 0.03 JG31F8-4030-2
268830 383 4.030 3.750 6.000 1.125 11.9 11.1 10.3 -5 394 B 0.03 JG31F8-4030-2
271055 383 4.030 3.750 5.700 1.425 11.9 11.1 10.3 -5 xxx 0.03 JG31F8-4030-2
271056 355 4.030 3.480 6.000 1.260 11.1 10.3 9.7 -5 414 A 0.03 JG31F8-4030-2
271057 355 4.030 3.480 5.700 1.560 11.1 10.3 9.7 -5 xxx A 0.03 JG31F8-4030-2


- 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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