Chevrolet Performance 19433406 - 383 Bare Block

When building a mild Small-Block performance engine or a replacement for a stock engine, production-based blocks from Chevrolet Performance give you strength, accuracy and peace of mind that can’t be assured in a rebuilt core. And unlike so many of the used cores, nearly all of ours feature four-bolt main caps for extra strength. Each cylinder block is machined to production-spec tolerances and is manufactured to the exact specifications of pre-1986 or 1986-later engines. Block Gen I 383 Block Material Cast Iron Bore 4.004" Max Recommended Bore 4.030" Oiling Factory Rear Seal Type 1-Piece Deck Height 9.025" Apprx Weight 185-LBS 4-Bolt Main Caps Cast Iron 4.004" Bore Torque Plate Honed Machined For Hydraulic Roller Or Flat Tappet Lifters Machined For Mechanical Fuel Pump