A friend of mine is building a vaguely-sevenesque (very large) roadster with a GM v6 and Sierra 4x4 running gear. Check out the pics for ideas and inspiration. http://www.locost.lt/viewtopic.php?f=2&t=64&start=120

So he's gon for full sierra track width?

TT

Yeah, I think so.

It's been stated before in this thread and I will repeat it.
The 4x4 transfer box on the rear of the gearbox sticks out to the right as far as the bell housing edge and the drive shaft has to pass outside of the bellhousing.
It will encroach a long way into the drivers side, you will need to push the whole engine train over or angle it quite away, I would suggest mocking up the chassis with the engine and box before any serious welding is done.
I believe the work required is more than just modding a chassis.
I would start with a basic outer frame and no tunnel in the early stages.
Interesting project but not one to makeup as you go along

it may be worth going for a full wider car, i know some purists don't like it but it would give more space, especially in the tunnel
.

TT

If you were building a left hand drive car the problem would effectively go away leaving only the passenger side compramised

I was in the 40 foot man cave today and found an mt 4x4 box. There is a shit load of man things in here.



Its 23 inches from the face of the bellhousing to the lump on the side of the box.for the front prop.


That means the the only bit of chassis that needs altering is tt1,tt3 and tt4 as this bit of the box is so far forward that it wont get in the way of your legs. The prop by the time its along side tt3 is back inside the geartunnel so wont interfere with the pedals so really its not at all hard to deal with this end of the conversion.

Bob

awwwwww, A nice little MT75 4x4 Box.. Lovely and light.

TT

This guy has gone some way towards the 4x4 thing http://www.super7thheaven.co.uk/

Bob

Or you could just phone Dax in Harlow and ask them about their Rush Quadra which they produced in 1998 which used Sierra 4x4 running gear and talk to them about how they got round a few problems.