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Re: Flywheel size vs Bellhousing
To address a couple of issues with your swap and questions:
Your muncie 4 speed is going to have a smaller input retainer size than the hole in your truck bellhousing. I believe Advance Adaptors will have the conversion bushing you will need to make the swap.
If your V8 is a typical warmed up small block with no intention to race (just a street driver) no problem on the 10'' clutch. Back in the day when these trucks were still coming through the shop as daily driven work horses I upgraded ALL my clutch jobs to a 12" clutch assembly, 6 cylinder, small block or big block. The 12" assy had about a 20-30 dollar price difference so it would be silly not to upgrade. Still a diaphram pressure plate, still a nice light pedal pressure. All the bellhousings will accept the larger clutch assy. and all 67-72s use the larger 168 tooth flywheel reguardless of engine.
Yes, your original 6 cylinder flywheel is the larger 168 tooth version that will accept larger clutches. Same flywheel will work on any two peice main seal 6 cylinder or V8 except for the factory 400 or 454 V8.
Steve weim55 Colorado
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