Ford 351C Cleveland Dual Idler Noisy Timing Gear Drive Set this unit will not include

this unit will not include instructions

They will allow for the use of reverse-style transmission valve bodies or switching from a 3-speed to a 4-speed

Designed for C4 transmissions in competitive environments where RPM levels approach or exceed 8

The shifter includes a lighted gear position indicator in the bezel

These manifolds require a universal 4-barrel throttle body

Ford 351C Cleveland Dual Idler Noisy Timing Gear Drive Set this unit will not includeSpeedmaster gear drives are great for you folks who want better timing. Their dual idler design has CNC machined components and they are easy to install. These drives fit under your stock timing cover and come complete with instructions. Minor machining may be required on some applications.