Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

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MV8
Steve Johnson
Atlanta, GA
(6 posts)

Registered:
04/30/2012 06:46PM

Main British Car:
1977 Spitfire 2.8L v6 and T5

Companion flange interchange
Posted by: MV8
Date: April 30, 2012 07:48PM

I have a 1977 Spitfire without a driveshaft (or engine, or transmission, etc). I've been looking at mg and triumph flanges on ebay. What applications use the correct companion flange for my application? I can see it has ujoint axles and I expect it to have a 3.89:1 ratio.

I searched without success.


NCtim
Tim Shumbera
Western North Carolina
(239 posts)

Registered:
01/19/2012 04:35PM

Main British Car:
Re: Companion flange interchange
Posted by: NCtim
Date: May 01, 2012 03:41PM

Hey Steve,

Maybe a little more info? What rear end, transmission?

NCtim


MV8
Steve Johnson
Atlanta, GA
(6 posts)

Registered:
04/30/2012 06:46PM

Main British Car:
1977 Spitfire 2.8L v6 and T5

Re: Companion flange interchange
Posted by: MV8
Date: May 01, 2012 05:27PM

Rearend is original to the 1977 Spitfire. I assumed the differential end of overdrive and nonoverdrive transmissions is the same. I don't know what transmission it came with. Is that on the vin plate? The dash is also gone, so no overdrive switch.

I just need the companion flange and rear weld joke inorder to make a hybrid driveshaft to connect my chevy s10 T5.

I may need to press and weld a ring to the spit weld yoke to step the tubing diameter up to about 2-1/2", or the smallest tubing weld yoke that will accept the s10 T5 slip yoke's u joint or maybe use a hybrid joint with two different size bearing caps and spider widths.

I found one for $30 on Ebay, so I guess that is about as cheap as they get.

Thanks
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