How hard would it be to swap a GM LLT engine into a Pontiac Fiero?

Question

Im looking into buying a 1988 Pontiac Fiero GT and making an engine swap, along with other modifications. I figure since money is tight for me now, it would be a better idea to supe-up a Fiero rather than spend $60K on buying and suping up a 2010 Camaro SS.

The swap I would really love to do is the 3.6L V6 (LLT) engine that is found in the new CTS, Camaro, and G8, then later on down the line, find me a shop that will make me a Twin Turbo set-up for it...but that's not the issue at this point.

What I really want to know, is how hard it would be to make the LLT swap into a Fiero. Its such a good engine, especially for a GM V6. But I don't know if it would be a very feasible swap due to the ECU and all of the gizmos that come with a this new motor.

I know that practically any swap is possible, but Im trying to keep the cost down....and yes, I know that the LLT engine wont be cheap, im planning on that being quite a bit, but I hope to keep the rest of the costs down, so Id prefer not to break the bank just to get all of the other necessary equipment to get the swap to work.

So if anyone has any experience or incite to modern engine swaps into older cars, I would love to hear any advice and/or incite you would be willing to give.


Oh, and as a side note, I do plan on using the Hydra-Matic 6L50 six-speed automatic transmission that the LLT engine is normally mated too, if thats possible without too much work.

Answer 1

Yes it can be done as long as you have the money and the experience to do it yourself it will cost cost you that much really.



I would look into swapping the engine for a small block v-8. Preferably a LS1 due to the fact that they are all aluminum and composite. A LS1 would not weigh any more than a cast iron v-6. It would give you more than enough power so that you would not even need the turbos. It would not be any more work to swap in a V-8 than it would a V-6. They make kits to do this swap. If you can manage to find a wrecked Camaro or Firebird you could get the parts pretty cheap but even if not you can get a complete ready to run LS1 for well under $5,000.00.



Good luck with what ever you descide

Answer 2

You are looking at pretty much uncharted territory with this swap. There's been a lot of previous engine swaps into Fiero's, all of them successful, but I haven't heard of a single new-6-swap into a Fiero; probably because the other swaps are so readily available.



I don't think the "gizmo's" will be the problem - I think dimensionally you're going to run into interferences; both with the oil pan and with the exhaust, and the million dollar question is - will the stock manifolds fit? If not - I doubt there are any aftermarket headers right now.



If you're looking for a 6 cyl conversion for a Fiero, I personally like the 3.8 conversion - you have the option of a supercharged option, or you can easily go aftermarket afterwards. Another wicked is the Northstar conversion - that's nice, and it gives you 300hp right off the bat with a traverse-friendly engine.



I linked to West Coast Fiero - they have a bunch of information, and perhaps a few good contacts that can steer you to somebody who can give you tech advice for the new 6.



I like the idea - very tech.

Answer 3

exctly 3800sc engine swap 1986 pontiac fiero gt