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MGBV8
Carl Floyd
Kingsport, TN
(4513 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Chrysler 8 3/4 Rearend Guide
Posted by: MGBV8
Date: November 25, 2015 11:16AM

Lots of good info.

[www.ebay.com]


Moderator
Curtis Jacobson
Portland Oregon
(4577 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Chrysler 8 3/4 Rearend Guide
Posted by: Moderator
Date: November 25, 2015 11:38AM

Good stuff!

Bill Jacobson installed one in his MGB V8, so they must be an excellent option. Details: [www.britishv8.org]

Would like to see a comparison between the Chrysler 8 3/4 axle and Ford's 8": weight, efficiency, availability and cost of gears (3.27 and 3.40 options) and narrowed shafts, any differences in aftermarket disc brake options, etc.



Edited 1 time(s). Last edit at 11/25/2015 11:42AM by Moderator.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Chrysler 8 3/4 Rearend Guide
Posted by: BlownMGB-V8
Date: November 25, 2015 12:32PM

The nice thing about the 8-3/4 is that it is a banjo axle and therefore easier to work on and has threaded backlash adjusters but should be somewhat lighter and smaller than the 9" Ford. I believe it has a shallower pinion offset similar to the common Salisbury type axles so it should be more efficient than the ford 8 and 9" axles. With a Power-Lok diff and either of the larger pinions it should be unbreakable in the MG. Even the small pinion version should hold up very well. Weight and bulk should be less than the ford 8.8. There are no c-clips so the axles can be removed without opening the case, unlike many Salisbury axles.

Overall it has a lot going for it and is a viable option for a high horsepower MGB. Jegs carries an aluminum 3rd member. (about a grand)

Bear in mind, The Dodge Brothers started out as axle suppliers to the major auto manufacturers. It stands to reason that they would have a good axle design, even today. Before I went to the Jag IRS with it's Dana 44 center section I was looking hard at the Chrysler 8.75"

Jim
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mgb260
Jim Nichols
Sequim,WA
(2463 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Chrysler 8 3/4 Rearend Guide
Posted by: mgb260
Date: November 25, 2015 06:19PM

It is an excellent rear axle. The only problem it was last made/used in 1974.


MGBV8
Carl Floyd
Kingsport, TN
(4513 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: Chrysler 8 3/4 Rearend Guide
Posted by: MGBV8
Date: November 25, 2015 09:20PM

It is heavier & stronger than the Ford 8 inch, Curtis. Probably on par with a 12 bolt Chevy. A bit much for most of us. Appropriate for some. I posted this because this rearend has been mentioned a couple of time here, including me. I always liked them.

Stout enough that a friend of mine has had one under a hot rod '57 Chevy Bel Air for many years.


mgb260
Jim Nichols
Sequim,WA
(2463 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Chrysler 8 3/4 Rearend Guide
Posted by: mgb260
Date: November 25, 2015 10:24PM

Another good one was the 57-64 Pontiac and Olds. Were popular with 55-64 Chevys when using a 409 or big block.

[cruisinstyle.com]



Edited 1 time(s). Last edit at 11/25/2015 10:27PM by mgb260.


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