KB Hypereutectic Piston 4.030" Bore 1/16 x 1/16 x 3/16" Ring Grooves - Minus 6.5 cc 42143 1955-1970 Chevrolet Bel Air

1955-1970 Chevrolet Bel Air

Accepts divorced choke

A game-changing method for accurately setting lash or pre-load while using non-adjustable style rockers

Ram 3500 Pickup

KB Hypereutectic Piston 4.030" Bore 1/16 x 1/16 x 3/16" Ring Grooves - Minus 6.5 cc 42143 1955-1970 Chevrolet Bel AirProduct Description: Piston KB Series Hypereutectic 4. 030 in Bore 5 64 x 5 64 x 3 16 in Ring Grooves Minus 6. 50 cc Small Block Ford Set of 8 Created from a high silicon aluminum alloy, KB Performance pistons are lightweight to improve throttle response and RPM changes while still being strong enough to withstand high compression and high temperatures. Each piston is engineered with race ready features like high upper compression ring locations, gas