The ANDREWS Cam Gear Drive Kit is a precision‑engineered component crafted from heat‑treated alloy steel, ensuring long‑lasting durability and strength under high‑stress camshaft operation. With a 2.7324‑inch pitch diameter, the undersized design is color‑coded orange for quick identification and is specifically tailored for 78‑99BT Big Twin engines. The gear’s material and dimensions are calibrated to correct valvetrain backlash between the cam gear and pinion gear, thereby reducing engine whine and eliminating the clicking that can arise from excessive play.
Installation is straightforward: the crimp‑on style gear mounts directly onto the engine camshaft assembly, requiring no additional hardware. Measurement accuracy is verified using 0.105‑gauge pins; a 0.108‑gauge pin will register a 0.012‑inch larger measurement, confirming the gear’s precise fit. Made in the USA, this kit delivers reliable performance for street‑racing applications while maintaining the exacting tolerances demanded by high‑performance engines.