7.300" Chromoly Heat-Treated 5/16" 0.080" Wall DNA® One-Piece Pushrods When building rear-ends for race

When building rear-ends for race cars or trucks

Windsor and Big Block versions are built from sturdy cast aluminum

Speedmaster has chosen the most popular diameters for their pulleys

full nylon braid

Speedmaster crankshaft damper spacers are just what you need to install your  429 or 460 damper

7.300" Chromoly Heat-Treated 5/16" 0.080" Wall DNA® One-Piece Pushrods When building rear-ends for raceGet all of the performance that your engine can produce with these durable pushrods designed especially for high lift cams. Speedmaster pushrods are available in both 5 16 in. and 3 8 in. diameters. They feature . 080 in. wall thickness and are formed from 4130 chromoly steel. These one piece Speedmaster pushrods are heat treated for use with guideplates. They have a minimum wall thickness of . 080 in. to handle higher rpm, plus a black oxide finish.