Thread: GMC Medium Duty Flywheel Size SAE 2
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Old March 5th, 2014, 10:50 PM
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Default Re: GMC Medium Duty Flywheel Size SAE 2
Here is the flywheel that came on the 401M;
16" across tooth to tooth diameter.
Not as concave as your tommr and used a 13" clutch.
Unsure of what size truck it was off of; Older Gent said a tractor trailer
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