Steering, Suspension, & Brakes

tips, technology, tools and techniques related to non-driveline mechanical components

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blacktop
Randy Howard
Everett, WA
(2 posts)

Registered:
03/30/2020 08:46PM

Main British Car:


Straight Rear Axles?
Posted by: blacktop
Date: March 31, 2020 01:23AM

Hi all,

I am new to this forum and just discovered it a few days ago. Pretty impressive!
Anyway, I am wondering what rear axles are being used for an MGBGT? If I decide to move on a car project I think a Ford 5.0 would be a great motor for that car. I want something that can handle 300hp of spirited road driving or track use. No drag racing.

What I discovered so far is that an 8" (year, make?) rear end is sturdy. What vehicles did this rear end come in? I am more familiar with the Ford 8.8" unit as used in Fox era Mustangs.

I also would prefer to mod the car so 5 lug wheels could be used along with larger disc brakes on all 4 corners. Any thoughts on that?

And finally, if I went Spitfire instead would it be wise to just replace the IRS with a straight axle?

Thanks for any and all help.

Randy


MGBV8
Carl Floyd
Kingsport, TN
(3980 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Straight Rear Axles?
Posted by: MGBV8
Date: April 02, 2020 04:37PM

The Dana 44 or 10 bolt GM rearend will also get it done.

Here's ya some info on the Ford 8, 9, & 8.8.

[www.diyford.com]


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5949 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: Straight Rear Axles?
Posted by: BlownMGB-V8
Date: April 03, 2020 10:23AM

Need to distinguish between early and late GM 10 bolt.
Also some divisions used a different axle.

Jim


Moderator
Curtis Jacobson
Portland Oregon
(4478 posts)

Registered:
10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: Straight Rear Axles?
Posted by: Moderator
Date: April 03, 2020 04:41PM

Info on 10-bolt axles: [www.britishv8.org]

(I can't see using one though, unless your project car weighs 3 or 4 thousand pounds.)


MGBV8
Carl Floyd
Kingsport, TN
(3980 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Straight Rear Axles?
Posted by: MGBV8
Date: April 04, 2020 11:50AM

I guess I should have clarified 10 bolt.

Back in the day, 10 bolt meant either the 8.2" or 8.5" GM 10 bolt rearend. Nowadays, it is the 7.5" or 7.625" 10 bolt. Either will do fine for most conversions.

[www.chevyhardcore.com]

Mike Moor has been testing his 7.625" 10 bolt Camaro rear for many years now behind his 300 RWHP MGB.

It is very difficult to find anything lighter than a stock MGB Salisbury rearend that is strong enough. The 8" Ford? The aluminum center is NLA & the pinion location make it slightly less efficient.

[www.hemmings.com]


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