Noisy gear drives are a nice upgrade to the sound and performance of your vehicle.
Engine Timing Gear Drives
Under-cover timing gear sets for SBC and BBC.
| PROFORM gear drives replace the timing chain with meshed steel gears for cam timing that never stretches or walks. Available for small block and big block Chevrolet, these under-cover models fit beneath a standard timing cover — no exposed hardware — and deliver the unmistakable gear-drive whine that announces a serious engine before the hood ever opens. A direct upgrade for street/strip builds where consistent valve timing matters. |