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Mod | | | Forums66 Topics128,014 Posts1,055,328 Members48,419 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jul 2005 Posts: 153 Wrench Fetcher | | Wrench Fetcher Joined: Jul 2005 Posts: 153 | I rebulit my powerglide that i'm bolting up to my 250. I got a new torque converter with 10 1/2" bolt spacing. My original flex plate and converter is 9 1/2" bolt pattern. Does anyone know of a new flexplate that will work? One manufacturer told me that they had a 10.5" flex plate that would work on 250's up to 350's but that the 250 crank diameter is different so it "may not" fit. Any ideas on a new flex plate.
Mac | | | | | Joined: Sep 2006 Posts: 841 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 841 | i don't know much about automatics but a flywheel will interchange on a 250, 292 and some v8's. i have seen a larger size and smaller but where it bolts to crank flange is the same. they changed the mounting bolts in the early 70's from 1/2 to 7/16. i think you can get bushings if you have 1/2 flywheel and 7/16 bolts or get flywheel drilled if its the other way. i don't know why a v8 one wouldn't work. | | |
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