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Speedmaster H-beam connecting rods are one of the strongest connecting rods available
the use of 6 pinion gears means the stress on gears is spread over a greater surface area
improved throttle response and better fuel economy
not from sand molds
They feature extra-thick steel that's double-welded to the ring gear for added strength and anodized for corrosion resistance
Chevy SBC 400 STD Main Bearings Speedmaster H-beam connecting rods areThese 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.
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