JE Pistons for Lightweight, Gas Ported, BBC 557 330168
Part Number: 330168
Item: JE Pistons, Lightweight, Gas Ported, BBC 557, Bore 4.500, Stroke 4.375, Rod Length 6.385, Dome +49cc, Set
JE Pistons new F.S.R. hollow dome GP (Gas Ported) pistons are specifically designed for circle track and drag racing applications. Up to 100 grams lighter than traditional full round (including wrist pin and rings), but stronger and more durable due to modern FEA-designed forging. Deeper valve pockets to accommodate higher lift cams and milled cylinder heads. Accepts low friction .043/.043/3.0mm ring package. Dome configuration designed to accommodate most popular open chamber cylinder heads, including Brodix Head Hunter with up to 2.400? diameter intake valves.
Pin #990-2500-18-51C (151g) Wire Locks 990-073-MW Lateral gas ports Accumulator grooves Contact reduction grooves 110cc 16.8:1 118cc 15.2:1 124cc 14.2:1
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