Turbo Supra box behind a Gen 3 Chev

[750hp]

Mike,
The physical size of the 5 speed Supra box doesn't appear to be a problem. Rod Hadfield at Castlemaine Rod Shop www.rodshop.com.au will definitely be able to supply a bolt-in bellhousing/adaptor for the LS1 - Supra.

My worry would be how far back the shifter is.... I think my elbow would hit the rear firewall behind the seats when going for 2nd or 4th gears! I wonder if you can relocate it?

[65hilly]

Originally Posted by 750hp

Mike,
The physical size of the 5 speed Supra box doesn't appear to be a problem. Rod Hadfield at Castlemaine Rod Shop www.rodshop.com.au will definitely be able to supply a bolt-in bellhousing/adaptor for the LS1 - Supra.

My worry would be how far back the shifter is.... I think my elbow would hit the rear firewall behind the seats when going for 2nd or 4th gears! I wonder if you can relocate it?

Just wondering where you got that info? I rang the Castlemaine rod shop, they said they didnt have a bell houseing for an LS1 to Supra gearbox, and said they wouldnt as that gearbox was really only good for 250hp? I was looking at this adaption myself as im fittling the LS1 into a 1970 capri. I have the standard auto 4 speed box, but would prefer a manual. although i have got a trans controller, that will allow full manual shift, so i could fit a paddle shift on the steering wheel. i guess my main issue is the size of the box, and i will have to cut the tunnel to fit it in. any ideas?

[Aussie Mike]

I cant see much point in doing the Supra conversion these days. I was looking at doing it when the T56 was still very expensive. Now you can pick them up for a couple of grand.

The T56 is a big gearbox but I'm not sure that you would need to do much to the tunnel. The box it deep and fairly long but when you think the main shaft is on the crank centerline it's not going to intrude into the tunnel much more than the Supra box. Given that, modifying the tunnel isn't a big deal compared to trying to match up different bellhousings, flywheels and clutches etc.

The bolt pattern for the LS1 is virtually the same as the small block chev. Only one bolt different I think.

Cheers

Michael

[Rog246]

Mike try Jeff Dellow @ Dellow automotive in Syderknee. He has a website etc and I know he does them. And my limited iinfo is yes they will take the grunt. I was also think of going down that path, but got a low K's engine & 6 speed complete when I didn't think I'd be able to.

Rog