Manley Roller Thrust Button - SB Chevy w/ Early (Up to 78) Timing Covers & All BB Chevy 1034103 Arch supports are required when

Arch supports are required when installing Allstar front support kits

Oxygen Sensor Bung

05 in seat height

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

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

Manley Roller Thrust Button - SB Chevy w/ Early (Up to 78) Timing Covers & All BB Chevy 1034103 Arch supports are required whenPlaced 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