Custom Pulley Machining
Mullie Motors can machine pulleys for custom needs. For instance:
- Custom pulleys for 5-in-4 trannies: Most 5-in-4 transmissions available from several afetrmarket companies use a 1980 to 85 main drive gear. These drive gears are of different diameter as the stock 4-speed main drive gears. Therefore, stock 4-speed pulleys won't fit. Furthermore, the alignment of the main drive gear and spacer is different than on 4-speeds, and there is less clearance between the transmission housing and the inner primary. Mullie Motors custom machines pulleys such that they can be fit on these early 5-speed main drive gears. Also, Mullie Motors provides custom machined main drive gear spacers to increase the spline contact width between pulley and main drive gear.
- Narrow down rear pulleys for use with narrow belts: If you plan to run a narrower belt, you rear pulley must be narroed down to suit the belt. Mullie Motors provides this service. The inner flange is removed, the pulley narrowed in a lathe, and the flange is reinstalled.
Please contact us through firstname.lastname@example.org for further inquiries.