KB Hypereutectic Flat Top Pistons - SB Chevy 383 - 5.7" Rod Length, .040" Over Bore Size R07C08YL 1-gallon container

1-gallon container

'68-'88 Malibu/Chevelle/Monte Carlo

These inlet kits make carburetor plumbing simple and neat

Lightweight RJS Quick Release Units are made from military spec aircraft aluminum and high strength alloy steel

KB Hypereutectic Flat Top Pistons - SB Chevy 383 - 5.7" Rod Length, .040" Over Bore Size R07C08YL 1-gallon containerModern piston design locates the top ring higher for improved performance. a high top ring operates at higher temperatures and requires a larger top ring end gap. To find the proper ring end gap, multiply your bore size by the ring end gap factor listed on the chart (i. e. , Street Normally Aspirated 4. 000" bore x . 0065" gap factor = . 026" total top ring end gap). Your hypereutectic performance piston will expand less than typical cast or forged