SCS Professional Series Quick Change Gear Set #8 H775CA3XXL Mechanical advance assembly can be

Mechanical advance assembly can be locked out for crank trigger systems or racing applications

Stop spending valuable time at the track searching for a tire gauge when it can be in an organized pouch at all times

1979-1986 Mercury Marquis

Exceptionally Smooth And Quiet Operation

SCS Professional Series Quick Change Gear Set #8 H775CA3XXL Mechanical advance assembly can beSCS 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