SCS Professional Series Quick Change Gear Set #33K Racing Head Service Two are required and should

Two are required and should closely match bump spring I

C12-R2 Valve

DynoMax Exhaust Pipe Mandrel U-Bend 42322 Tube OD 2

Big Block Chevy Head

GMC TH400 Automatic Transmissions

SCS Professional Series Quick Change Gear Set #33K Racing Head Service Two are required and shouldSCS Professional Series Quick Change Gears are made from aircraft steel for maximum strength. Each gear has a shaved finish to minimize backlash and run out, and is broached for proper 10 spline shaft fit. The SCS Extra 5 step heat treating process yields maximum gear life for high stress applications such as big block Oswego Super Modifieds and World of Outlaws Sprint Cars. Gears have a black oxide finish, and the faces have been lightened to reduce