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The runner length and the tapered cross-section were designed to perform well for a wide range of engine configurations
Easy--they combine an electric motor that is much stronger than a stock starter for serious torque
Speedmaster billet main caps are precision CNC-machined from superior-quality 1025 billet steel
the way stock or inferior-quality aftermarket gaskets can
These Speedmaster tailshaft housings are designed five times stronger and more ridged than stock because they are made from aircraft grade aluminum alloy
I Beam 6.385" 2.200" .990" 5140 Connecting Rods Chevy BBC 454 w/ ARP 2000 The runner length and theThese Speedmsater I beam connecting rods incorporate all of the best features possible for an I beam rod, including some strength adders found in H beam designs. Speedmaster I beam connecting rods are profiled with clearance for long stroke applications. These connecting rods feature a one rib cap design for added strength and bearing support, polished beams to eliminate stress risers.
