Chevy BBC 454 Chrome "454 Stamped" Steel Valve Covers - Tall w/ Baffled Hole These rockers are precision-machined to

These rockers are precision-machined to ensure consistency and ratio accuracy and have a great looking finish

Speedmaster Aluminum Roller Rockers are extruded from 6061 T6 Aluminum

These Speedmaster TDS rear housing ends will get the job done

These Speedmaster aluminum pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 specs

and you can choose between plain polished

Chevy BBC 454 Chrome "454 Stamped" Steel Valve Covers - Tall w/ Baffled Hole These rockers are precision-machined toDress up your engine compartment without breaking the bank. These Speedmaster valve covers are an affordable and easy way to brighten up your engine.