Thread: Question about starters
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Old September 21st, 2025, 08:43 PM
Prowbar Prowbar is offline
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Default Re: Question about starters
I haven't started yet, I wanted to have the information before I started.
The GMC gear is pretty worn out but usable, not ideal.
The Chevy gear would have to be shortened to match the GMC gear length. Now this would be do-able with a CBN cutting insert. Not sure if these are through hardened but my guess is that they are.

I'm not modifying the Bendix or solenoid or arm either. Everything should swap over when I have the right length of gear.

I should add that I rebuilt the GMC starter with the longer gear as is used on the Chevy starter (this gear was provided in the kit) and I had a lot of problems with the starter grinding when disengaging from the flywheel.

Do you have a original GMC starter so you could measure the length of the pinion gear to verify the shorter length?
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