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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | A 1940 flywheel is held on by 3/8” bolts and has a slightly larger center hole. 1942 on up used 7/16” bolts.
I have seen 1940-41 flywheels drilled for 7/16” bolts, and the center hole diameter was not an issue, (even though it was designed to center the flywheel I am sure), as the three lineup dowels keep the flywheel in position.
Bellhousing and transmission are no problem.
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