Manley Roller Thrust Button - SB Chevy w/ Early (Up to 78) Timing Covers & All BB Chevy 1034103 Works with EGR for 1972-78

Works with EGR for 1972-78 400cid w/ OEM 4-bbl

The SBS comes complete with high-strength mounting hardware and instructions

Increases Fuel Economy

Shock Travel Rod

Manley Roller Thrust Button - SB Chevy w/ Early (Up to 78) Timing Covers & All BB Chevy 1034103 Works with EGR for 1972-78Placed between the camshaft nose and timing chain cover to prevent the camshaft from "walking" forward in the block. Manley Performance high performance and racing engine parts have been powering winners since 1966. Since our inception in March 1966, Manley Performance Products has been at the forefront of the high performance automotive industry. Founded by gearhead Hank Manley shortly after his graduation from Brown University, our journey began