Thread: Engine Swap - TD5 90 to .......LS1/6......?

i would talk to bruce davis performance in sydney, for the budget you are talking he could build you one hell of a rover v8 and the fitting issues wouldnt be a problem then.

an LS1 into a defender would be cool though, i reckon an auto box, but you would need to research what would fit the best, and you would need to spend som cash upgrading the rest of the drive line cause a defender drive train wasnt built to take the power of a 5.7L v8

Thanks for the reply Ace.

I don't really want a Rover one.....

How about this:

HSV LS2 6.0 LITRE V8 ENGINE HOLDEN - OPTION FOR BOAT - eBay V8, Performance Parts, Car Parts, Accessories, Cars, Bikes, Boats. (end time 17-May-08 14:25:30 AEST)

I have wanted a very powerful 90 for a long time! Drivetrain upgrades wouldn't be too much of an issue. At least all that stuff is available off the shelf.

Pete.

no worries, just thought i would mention it.

Well go for the V8 conversion then, i would be looking in Australia for a wrecked SS Commodore or something then you have everything complete and you can source all the bits you need to make the engine run like the computer etc.

Anything can be made to fit, but you might need some engineering to make the diffs etc line up and modified tailshafts etc will be needed. But i would be interested to follow the project it sounds like it will be a top rig when you are done.

Are you planning to drive it on the road? How hard would it be to get it legal?

Frenchie,

I would want it to be legal yes. I will check with the engineer who engineered my car when I brought it over to see if there is any chance before I spend too long looking into it.

Having done a bit of research it seems that the easiest option for the mechanical bits is

LS*
T56 (6 Speed manual)
LT230

There 'seems' to be an off the shelf adaptor to bolt the LT230 to the T56.

T56 is obviously intended to be run with the LS and therefore is a straight fit and wont have any issues. If there is the conversion plate available that would make it reasonably straight forward.... propshafts and so on would obviously need to be modified.

Wonder what the possible running angles of the LS are compared to a LR engine.... may need to be dry sumped!

Pete

Watching this thread with interest.

I have an injected rover 3.9 V8 in my 90 that I have to replace / rebuild soon.

I'm considering the later "4L" variant for slightly more torque at lower RPM, but am not 100% set on it yet. It's a simple bolt in job, I already have the box and there's no need to take it over the pits again, as its the same capacity as my current engine. Will follow up with Bruce Davis on other rover V8 options, but am interested to see where your project takes you.

Cheers

Bojan

The supercharged 3.9 with 5 psi made 100ish RWKW a gen 3, stock, same gearing, tyres and dyno makes 170, how much do you think you'd have to do with a rover motor to get that

Let alone the fact that the Delco EFI is awseome and will **** on any rover build for fuel economy also

Shame you weren;t close, I'd be interested in offering some services

Only real issue is how the 90" is going to handle the 6" shorter rear tailshaft

it all sounds like fun pete, but i just wen through all this genIII/LS... thing a very short time ago.

Problems - can't get a fender engineered over 5L in QLD

I was going to run an auto and all autos to handle that kinda power will leave you with driveshafts the size of peanuts! unless you look at a wheelbase extension while your at it?

sorry to dampen things....

I've opted for a freshly stroked 4.4L rover and ZF, will let you know how she goes when all done, was thinking a 5L dunnydore, but then went for the ease of a bolt together jobbie, no adaptors, etc

sam