MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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MGBV8
Carl Floyd
Kingsport, TN
(3895 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: MGB GT V8 Conversion
Posted by: MGBV8
Date: April 29, 2020 10:28AM

Here's some corner weights.

[www.britishv8.org]


Nukem
Caleb Newcome
Connecticut
(18 posts)

Registered:
05/01/2019 07:00PM

Main British Car:
1974 MGB GT Ford 302

Re: MGB GT V8 Conversion
Posted by: Nukem
Date: April 30, 2020 08:43AM

Good to have your insight Jim, and thanks Carl, I don't think I've spent too much time on that page yet.

Not really thinking it's necessary, but I thought it would be fun so I figured I'd give it a try. This is mostly an excuse for me to play with power tools and sheet metal. Cutting big holes in the firewall had definitely provided that.

Nothing is really nailed down (on the car or in my head) at this point so going a bit forward is still in the playbook. I've already notched out my cross member to allow for it to move forward if necessary.

I'm also considering changing up the steering shaft flange location at the firewall similar to in Dan Masters' car.

Terry Schulte's car caught my eye: [www.britishv8.org]

His modifications to the steering are about what I had in mind.



Edited 2 time(s). Last edit at 04/30/2020 08:53AM by Nukem.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5911 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: MGB GT V8 Conversion
Posted by: BlownMGB-V8
Date: April 30, 2020 11:11AM

Terry's car is a good example of a minimalist installation of the Buick 300 where the stock hood closes on the engine. I don't think the builder had to do much other than move the firewall mount for the steering down about 1-1/2" and that was done with a minimum of cutting. Probably had to trim the right side shelf back a little for head clearance as well but I don't remember. Lucky it's a GT so you had no need to brace the doors before cutting all that out. Just remember this, Virtually every bit of extra space you take for the engine will end up coming out of the area for your right foot. Which pretty much has to stay on the gas pedal. That can make for unpleasant driving if not carefully thought out.

Jim


MGBV8
Carl Floyd
Kingsport, TN
(3895 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: MGB GT V8 Conversion
Posted by: MGBV8
Date: April 30, 2020 12:56PM

I believe you two are talking about two different Terrys & two different GTs.


Nukem
Caleb Newcome
Connecticut
(18 posts)

Registered:
05/01/2019 07:00PM

Main British Car:
1974 MGB GT Ford 302

Re: MGB GT V8 Conversion
Posted by: Nukem
Date: May 01, 2020 09:28AM

I think you are correct.

Changing the subject a little: glass is out and all the brightwork is off. I'm contemplating having the shell media blasted, but I've started peeling back some of the layers of previous rust repairs, bodywork and resprays anyway.

Most of the previous rust repairs were not carried out properly, with the patches welded in over the original rusted panels in some cases. Overall the shell is in reasonable shape though, not nearly as bad as some of the pictures in my Haynes restoration manual.

PSX_20200501_092445.jpg
PSX_20200502_185729.jpg
PSX_20200502_185647.jpg



Edited 2 time(s). Last edit at 05/02/2020 06:58PM by Nukem.


Nukem
Caleb Newcome
Connecticut
(18 posts)

Registered:
05/01/2019 07:00PM

Main British Car:
1974 MGB GT Ford 302

Re: MGB GT V8 Conversion
Posted by: Nukem
Date: June 04, 2020 12:27PM

I expect to take at least a little flak for this, but here is a fun shot of my mate's Z31 wheels on my MGB rear axle. Just trying to get an idea of how much tire I can fit and his wheels were handy, so don't take this too seriously...

Wheels are 17x9 wearing 245/40/R17

Clearance to the bump stops is tight but they bolt up and spin freely, so they might actually work with a little different offset, better axle location, and fit under some relatively moderate flares.
PSX_20200604_122141.jpg



Edited 1 time(s). Last edit at 06/04/2020 01:00PM by Nukem.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5911 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: MGB GT V8 Conversion
Posted by: BlownMGB-V8
Date: June 05, 2020 10:45AM

Good looking wheels actually.



Nukem
Caleb Newcome
Connecticut
(18 posts)

Registered:
05/01/2019 07:00PM

Main British Car:
1974 MGB GT Ford 302

Re: MGB GT V8 Conversion
Posted by: Nukem
Date: June 05, 2020 09:20PM

I thought I would hate them on the MG but I was surprised when I didn't.

I think they look more at home on my mate's Nissan
PSX_20200605_211802.jpg

I tried his rear wheels which are 275s yesterday and they almost fit as is, and would fit pretty easily with mild flares and a little different offset (or a little wider rear track from an 8.8)



Edited 1 time(s). Last edit at 06/05/2020 09:32PM by Nukem.


rficalora
Rob Ficalora
Willis, TX
(2670 posts)

Registered:
10/24/2007 02:46PM

Main British Car:
'76 MGB w/CB front, Sebring rear, early metal dash Ford 302

authors avatar
Re: MGB GT V8 Conversion
Posted by: rficalora
Date: June 06, 2020 12:14AM

Doesn't the diameter of the 275's make the back of the sit a bit high?


Nukem
Caleb Newcome
Connecticut
(18 posts)

Registered:
05/01/2019 07:00PM

Main British Car:
1974 MGB GT Ford 302

Re: MGB GT V8 Conversion
Posted by: Nukem
Date: June 06, 2020 07:34PM

I think the 275s were 275/35, so about an inch larger in diameter than the stock wheels and about the same as the 245's. Should be manageable but a little taller than ideal.



Edited 2 time(s). Last edit at 06/06/2020 08:38PM by Nukem.


MGBV8
Carl Floyd
Kingsport, TN
(3895 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: MGB GT V8 Conversion
Posted by: MGBV8
Date: June 07, 2020 09:35AM

25.6" is more like an inch & a half taller. Plus, heavier.


Nukem
Caleb Newcome
Connecticut
(18 posts)

Registered:
05/01/2019 07:00PM

Main British Car:
1974 MGB GT Ford 302

Re: MGB GT V8 Conversion
Posted by: Nukem
Date: June 07, 2020 10:46AM

Hankook makes a very economical 245/40R15 that I have been eyeing, but my impression was that it might be too short.

On another note, I picked up some seats from a Porsche 914 last weekend. Super light and fit easily:
PSX_20200607_103927.jpg
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