Chevy SBC 400 STD Main Bearings improved throttle response and better

improved throttle response and better fuel economy

Speedmaster shirts are the perfect way to let everyone know where you go for high performance aftermarket parts and accessories

The TorqueWorm is a torque biasing 6 pinion gear type limited slip unit

capable of withstanding valve spring load up to 600lbs

It is set up to accept a spread bore carb

Chevy SBC 400 STD Main Bearings improved throttle response and betterThese 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.