Pay in 4 interest-free payments of $14.43 Learn more
Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
not from sand molds
They will mount anywhere in the engine to eliminate any clearance issues
It is set up to accept a spread bore carb
capable of withstanding valve spring load up to 600lbs
the use of 6 pinion gears means the stress on gears is spread over a greater surface area
Chevy SBC 400 STD Main Bearings not from sand moldsThese 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.
