72 C4 in a 70 Mustang with 351C
#1
72 C4 in a 70 Mustang with 351C
I'm put a 351 Cleveland in my 70 Mach 1. The 351C motor and C4 trans are from a 72 Montego and for some reason the standard 1969 driveshaft 51" between yokes is too long for my car which has a 9" rear with 3.00 gears open. They fit nicely and the tranny fit fine with the standard crossmember and rubber mount. Did some bigger cars have a longer tailshaft on their c4s?. I found what I think is an FMX driveshaft that has a distance of 50" between yokes so I'm going to just swap the yoke and it should be perfect. But what I want to know is; are there different length C4s?. Is this an HD c4? Thanks
#2
Some Tail Shaft Splines on the rear of C-4s tranny have different teeth counts. Make sure the yoke matches and slides in. Not sure if you have a HD C-4. If the Montego came with a V8 engine, probably. But, if it had a straight 6, you may have to beef the tranny up, with larger clutch packs and internals.
#4
Yes, that would be hard to say, after all these years. You'd have to look for a build sheet to find out about the rear end. Not sure where you'd go for that....Maybe GOOGLE it?
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