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These control arms are manufactured to strict tolerances to employ a great fit and exceptional performance
heat-treated to the highest Rockwell hardness available
Couple this Hi-Ram intake with the high flowing LS1 style cylinder heads has outstanding potential for naturally aspirated and forced induction applications
don't cut corners
The pump is submerged in fuel
Chevy GM LS STD Main Bearings [4.8 5.3 5.7 6.0 6.2] These control arms are manufacturedThese 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.
