easymotorspo
Well-Known Member
Are all 7.25 rears the same, will the parts interchange? If you had one say from 66 will the internals fit a 1968?
In full disclosure, I have a 68 Plymouth Valiant with 3.23 gears in a 7 1/4 housing. I am wanting a SG. A member here has a complete rear from a low mileage Barracuda, with 3.23 gears, sure grip, in a 7 1/4 housing. Can I not just take and swap the gears and sure grip and transfer?There were 9 cover bolt versions with both small and large bolt axle patterns and then there is a large axle bolt pattern 10 bolt version that is very close to being a hybrid of the early axle and Dana 30 & 35 jeep axle parts. I would have to look it up again, but it seems that the 10 bolt cover came out with the 2-1/2 axle tubes swaged down to fit the 2 inch center section around '78 or so. Interchangeability is a given between 9 bolt units, but I have seen 10 bolt versions for F/J/M bodies, so it's difficult to say what internal differences you might find with them.
The rear end in my car, 68 valiant, has been rebuilt, no brakes, lines, cylinders, seals bearings gaskets, fluids, etc. the sure grip I am buying is a 22k mile rear ens, 3.23 gear. I was going to just take out the parts need and swap them over. Sure grip, and gears. That’s my thinking since mine has been gone through.Yes! Thank you for giving us the details. If you are planning on rebuilding, have you found a source for bearings and seals, etc.?
New breaksThe rear end in my car, 68 valiant, has been rebuilt, no brakes, lines, cylinders, seals bearings gaskets, fluids, etc. the sure grip I am buying is a 22k mile rear ens, 3.23 gear. I was going to just take out the parts need and swap them over. Sure grip, and gears. That’s my thinking since mine has been gone through.
Does anybody make axles aftermarket that I can buy to put in my 7.25 to make it the larger bolt pattern ? I have a 65 barracuda formula S and it has the small bolt pattern, thanks for any helpThere were 9 cover bolt versions with both small and large bolt axle patterns and then there is a large axle bolt pattern 10 bolt version that is very close to being a hybrid of the early axle and Dana 30 & 35 jeep axle parts. I would have to look it up again, but it seems that the 10 bolt cover came out with the 2-1/2 axle tubes swaged down to fit the 2 inch center section around '78 or so. Interchangeability is a given between 9 bolt units, but I have seen 10 bolt versions for F/J/M bodies, so it's difficult to say what internal differences you might find with them.
So the 73 and later 7.25’s with sbp are the same as the earlier ones but 73 and later with bbp are the slightly narrower ones?10 inch drums and shoes are wider. The axle tubes are shorter on the 5 on 4-1/2 wheel bolt pattern.
9 and 10 inch brake 7 1/4 rear ends are different width.