MG Sports Cars

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

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David Blackledge

(1 posts)

11/24/2022 12:15PM

Main British Car:

MGB Future Power,
Posted by: dsblack03
Date: November 25, 2022 09:40AM

Good morning, I'm new to this site and to the MGB conversion projects. I have a 67 MGB that is in sound shape however the body and interior need full restore. My plan is to maybe convert the power to a Camaro V6 and T5 Transmission. I have seen a lot of these done with this set up.

Before I get the motor and transmission going, I would like to get some things done in advance. One item is a 16-18 gallon tank replacement. I'm hoping I can get a tank that allows me to also have room for dual exhaust. Does anyone on this site know where or who I can talk to about one? The next three items will be which rear end and gears I should have for the V6 setup. Then probably look at better breaks and power steering. Any resources on this or information would be greatly appreciated.

Fred Key
West coast - Canada
(1372 posts)

05/14/2010 03:06AM

Main British Car:
I really thought that I'd be an action figure by now!

authors avatar
Re: MGB Future Power,
Posted by: DiDueColpi
Date: November 25, 2022 03:47PM

Moss Motors sells a 16 gal tank in their touring line.

Curtis Jacobson
Portland Oregon
(4578 posts)

10/12/2007 02:16AM

Main British Car:
71 MGBGT, Buick 215

authors avatar
Re: MGB Future Power,
Posted by: Moderator
Date: November 25, 2022 04:53PM

Welcome to BritishV8, David!

Any resources on this or information would be greatly appreciated.

This site's How-It-Was-Done archive, extensive Photo Gallery, and forum Journal section are all great references. Pro tip: you can enter search terms such as "centered fuel tank" (into the Google box at the top of the page) to speed investigation of specific topics. That particular example search yields ~70 results spanning BritishV8... and it reminded me of how Ralph Ratta modified the boot floor of his MGB. You can compare/contrast his apprach with other approaches...

Philip Waterman
(112 posts)

07/30/2011 01:08PM

Main British Car:
1972 MGB GT

Re: MGB Future Power,
Posted by: waterbucket
Date: November 28, 2022 02:51PM

I posted this on the MG Experience;
This is very much a work in progress but some of the photos may help you even if the tank design is of no use. You will notice that no welds have been ground down (we have a difficult neighbour who complains if I make any noise emanating from the garage) and the piece of boot floor that was cut out and turned around was also turned upside down. The space available for a silencer (muffler) each side is 63/4" wide and from the rear valance to the front edge of the tank is 22"

Carl Floyd
Kingsport, TN
(4526 posts)

10/23/2007 11:32PM

Main British Car:
1979 MGB Buick 215

authors avatar
Re: MGB Future Power,
Posted by: MGBV8
Date: November 29, 2022 09:23AM

Swaps resources:


Enough searchable information & pics to write 2 or 3 Swaps books.

bill spohn

(31 posts)

10/23/2007 09:14AM

Main British Car:

authors avatar
Re: MGB Future Power,
Posted by: wspohn
Date: January 20, 2023 07:45PM

Assume that you just like the looks of a dual exhaust as there is no pay off from that in terms of added power?

Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6472 posts)

10/23/2007 12:59PM

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

authors avatar
Re: MGB Future Power,
Posted by: BlownMGB-V8
Date: January 21, 2023 10:36AM

The payoff of the dual exhaust is increased ground clearance since the pipes and mufflers can be smaller/thinner for the same volume of flow. The flow of two 2" pipes is equal to one 2.8" pipe.


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