8.670" Chromoly Hardened Steel 5/16 +0.080" Wall One Piece Pushrods (16/Set) and header clearance

and header clearance

They are available in several styles depending on your application needs

The outer cases made from 8620 Chrome-Nickel-Moly steel and the case hardened for long life and improved strength

Speedmaster aluminum LS valve covers will give your LS series engines a totally new look

this pulley is designed to provide superior durability and efficiency

8.670" Chromoly Hardened Steel 5/16 +0.080" Wall One Piece Pushrods (16/Set) and header clearanceGet 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.