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Cluster Gear - 17/19/22/27T
Description
The AWT297‑8 is a close-ratio cluster gear designed for 1963–1965 GM Muncie M20 4-speed manual transmissions. Featuring a 27-22-19-17 tooth configuration and a 7/8" countershaft pin, it is made from carburized alloy steel (SCM415 or SAE 8620) for superior strength and wear resistance. Ideal for classic muscle cars, this gear improves shift smoothness and acceleration by reducing RPM drop between gears.
Specification
Gear Type: Cluster Gear
Material: SCM415 or SAE 8620
Heat Treatment: Carburized & Quenched
Surface Hardness: HRC 58–62
Tooth Count: 17 / 19 / 22 / 27 T
Countershaft Pin Diameter: Approx. 22.2 mm (7/8 inch)
Manufacturing Process: Precision gear hobbing with post-heat-treatment grinding
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Model：WT297-8
