Chevy SBC 400 STD Main Bearings Fits big block Chevy rectangular

Fits big block Chevy rectangular port cylinder heads on standard deck blocks

these valvetrain kits provide all the necessary components for a complete and reliable rebuild

and regulator

Speedmaster regulators are ideal for use with high-volume fuel pumps

Couple this Hi-Ram intake with the high flowing LS3 style cylinder heads has outstanding potential for naturally aspirated and forced induction applications

Chevy SBC 400 STD Main Bearings Fits big block Chevy rectangularThese Speedmaster main bearings are just what you need to freshen up your engine. Why? They use silicon aluminum bi metal construction. Silicon aluminum is the choice for many of today's engine manufacturers because of its high fatigue strength and superior temperature threshold. Bearing wear is dramatically reduced and the fatigue strength is greatly improved.