As long as I have a million other projects in progress on my Dart...

I am switching the front suspension to the '73-76 stuff so the lug pattern is larger now and I am trying for 350 to 400 h.p. with the EFI/turbo...

Will a 8 1/4" Rear end out of the same donor car (as the front suspension) be strong enough to allow for the occasional tire abuse?

Every search I did talked about 8 3/4"ers or Phord rear swaps so is there a reason why the 8 1/4" rear doesn't get considered?

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Chris'
Autobody
Restoration
Service

ive recently been asking the same questions on other board and the apperently the sure grip units are pretty strong. buddy of mine has one in his 66 cuda with a worked over 360 running 12's. hasnt had a problem yet.

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1966 Plymouth Valiant, 225, 3 on the tree, 8 1/4 3.21 sure grip, hyperpac, holley 650dp, holset h1c

I've got a '72 Polara w/ a centrifugally supercharged 360 in it and an 8 1/4 in it. Been that way for about 6 years, ~30,000 miles, dozens of passes at the track on slicks. It's still holding up, much to my surprise.

I think that the 8 1/4 is stronger than it gets credit for, but it's still got c-clip axles, and that's the little nagging thought that bugs me about it. It's what i've got in my 360 Dart, too, although I'm planning on moving it into my /6 car.

As I recall... the 8 1/4 also has a roller axle bearing set-up that rides directly on the axle shaft as the "inner race", if the rollers wear or get damage, you need a new axle shaft. (someone correct me if I'm wrong)

Years ago I set-up most of my cars with 8 3/4 rears, just because I liked the "drop-out" center gear section. I am lucky I collected all that stuff when I did.
I can't believe the $$$ the 8 3/4 parts get these days and the units never seems to pop-up in the wrecking yards anymore.
DD

I notice the latest issue of Hemmings has an article about the 8.25 diff.

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/6 '67 Barracuda convertible, electronic ignition, 4-OD, street cam, SBP KH discs, 3.55 SG 7.25" 1" t-bars. Bilstein.
340 '67 fastback, Doug Nash 5-speed.
1988 Toyota pickup work truck

Cool!!! The wife said it was in the mail. Maybe this day will turn out better than I thought it would. (I ran out of paint in the middle of painting the small parts for the Superbird I am restoring and had to drive an hour to get more )

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Chris'
Autobody
Restoration
Service

According to a parts place up here(Lordco) you can get repair bearings that somehow ride on a different part of the axle for the ford 8.8. MAYBE the mopar 8 1/4 has something similar, have not checked.

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Excuse me, does this smell like chloroform to you?