6.770" Chromoly Heat-Treated 5/16" 0.080" Wall DNA® One-Piece Pushrods They do this using a

They do this using a unique design in which cooling tubes draw cool air through the transmission fluid

When time is crucial and weight means everything

Speedmaster gear drives are great for you folks who want better timing

It serves as a direct replacement for stock intakes

Although the GM heads are good pieces

6.770" Chromoly Heat-Treated 5/16" 0.080" Wall DNA® One-Piece Pushrods They do this using aGet 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.