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Old 09-12-2010, 11:19 PM
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NumberDummy
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Originally Posted by Hazmat 67
I need to know if it is at all possible to bolt up the 460 flywheel as it has the larger 12" clutch assembly instead of the 11" that was bolted up to the 400M flywheel.

The 460 flywheel had casting # RF-D9TE-6380-BB with a cast oval with a 253P in the center also on the flywheel surface.

It has some stamped letters that read E7TR-AA D on a flat machined area near the outside edge.
If you have an 11" clutch you have a 351M flywheel, not a 400 flywheel.

And...if you have a 11" clutch, the engine may not be a 400, it could be a 351M.

D7TZ6375E .. 351M Flywheel-Use with 11" clutch.

Fits: 1977/79 F100/350 / 1978/82 Bronco / 1980/82 F150/350 & Econoline.
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D7TZ6375D .. 400 Flywheel-Use with 12" clutch.

Fits: 1977/79 F100/350 / 1978/82 Bronco / 1980/82 F150/350 & Econoline.
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E7TR-AA = E7TZ6375A .. 460 Flywheel-Use with EFI.

Fits: 1987/96 F250/350, F(Super Duty) & E250/350.
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E7TZ6384A .. Flywheel Ring Gear-180 teeth.

Fits: 1977/82 351M/400 / 1983/96 460.

Ford did not offer the 460 with a manual transmission or with 4WD until 1983.

btw: There is no such thing as a 400M / It's just plain 'ol 400.