MG Sports Cars

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

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danielruhe
Daniel Ruhe

(12 posts)

Registered:
05/23/2019 12:44PM

Main British Car:


Mgb chassis strengthening ideas
Posted by: danielruhe
Date: December 11, 2019 08:26PM

Does anyone have any ideas for structural strengthening when doing a v8 conversion? I am putting a very well build 302 into a 74 roadster, and I just want to make sure the unibody is up to handle the 375-400 hp I will be putting in the car. The last thing I ever want to worry about in the car is completing the project and end up with a twisted frame. I have already bought upgraded suspension/drivetrain components (fast cars ifs/cce 4 link rear/ford8.8 etc.). I also have already repaired any rust and added rear subframe connectors from mid frame to the front leaf spring perches now going to be used for the 4 link setup. I plan on making this car a very nice street car, but also be able to drive it very hard reliably, and potentially take it to a track. Any suggestions would be greatly appreciated!


mgb260
Jim Nichols
Sequim,WA
(2019 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Mgb chassis strengthening ideas
Posted by: mgb260
Date: December 11, 2019 09:10PM

I like what Geoff did in his build thread:

[forum.britishv8.org]


rficalora
Rob Ficalora
Willis, TX
(2648 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 chassis strengthening ideas
Posted by: rficalora
Date: December 12, 2019 04:13PM

Quote:
I am putting a very well build 302 into a 74 roadster, and I just want to make sure the unibody is up to handle the 375-400 hp I will be putting in the car.

That's a pretty stout 302 if that's RWHP. Would love to hear what you're doing to get that.


danielruhe
Daniel Ruhe

(12 posts)

Registered:
05/23/2019 12:44PM

Main British Car:


Re: Mgb chassis strengthening ideas
Posted by: danielruhe
Date: December 12, 2019 08:47PM

That is the crank horsepower, haven't built the car yet so yet to put it on a dyno to test rwhp. It is a custom built roller engine with a custom cam AFR heads and lot of other goodies, also might add a nitrous system for the fun of it to get maybe 500 or high 400's.


MGBV8
Carl Floyd
Kingsport, TN
(3827 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: Mgb chassis strengthening ideas
Posted by: MGBV8
Date: December 15, 2019 12:25PM

The MGB is a fairly stout unibody. What you have already done will go a long ways to making it even stronger. I also like the additional front outriggers in the link by Jim N. Someone else did that mod many years ago (can't remember who). A roll cage will do the most.

More ideas.

[www.britishv8.org]


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