350 CHEVY Speed Pro 125 Dome Pistons H618CP 5.7 Rod +30

Chevy 350 Speed Pro Pistons

New set (8) of Speed Pro hypereutectic Chevy 350 pistons - H618CP. +30 bore. Dome piston with 2 valve reliefs. Anti-friction coated skirts. For use with 5.7" connecting rods. Includes pins and wire locks. Can be used with either pressed fit or bushed rods.

H618CP30 Bore 4.030" Stroke 3.48" Dome Shape .125 dome, 2 VR Dome Volume 3.5 cc Comp. Distance 1.560" Pin Type Press or Float Ring Size 5/64, 5/64, 3/16 Piston Weight 596 g. (approx) Compression (@ .025 deck clearance) 58cc 64cc 68cc 72cc 76cc 11.57 10.72 10.23 9.78 9.38

 

These hypereutectic Speed Pros are perfect for stock to moderate performance rebuilds. Silicone aluminum alloy allows them to run with tighter clearances, less friction, and increased sealing. Higher strength compared to regular cast pistons. Duroshield coating on piston skirts delivers longer life and reduced friction.