Which engine?

[64casteel]

I have an 86 Fiero Gt. Im 16 so im not loaded with money, but i have a question on an engine to run. I have the original 2.8 v6 but as any guy does, i want a little more power. I've thought about the supercharged 3800 but i know the fitment is a little more tighter than the original v6 (which is really tight). But a idea that came to mind was one of the new ecotec motors, like the 2.2 out of the hhr's and cobalts. I can supercharge them and there are a ton of aftermarket add-ons, plus it will still get better gas mileage than the 19ish im getting with the 2.8. Whats you opinion? Keep it Stock or change it.

[squirrel]

Do you need the car for transportation? Just keep in mind that an engine swap on a small car can take quite a bit longer than you planned on.

[oldsman71]

they have some hotrod stuff for the 2.8, if the ecotech fits they run good, even the one in my wifes o4 cavalier runs good

[Barry Donovan]

a sideways drivetrain behind you...

I vote the inline four. it is far enough away.


I drove one of those just once..can't remeber mr2 from a fiero..but do remember engine was crazy large even as oem.

more air, and room..very light go kart. boost would be fun if it fits as well.

[tardis454]

Run a 3.4 motor in it, same Fiero cam & heads, more displacement.
You can switch to the newer better intake/injection set-up.
Plus 3.4 motors are a dime a dozen at the junkyard...

[oldsman71]

^ that sounds good too

[Thumpin455]

There was a guy in Canada who spent about $6k and stuffed a 455 in his Fiero longitudinally. He used a Riviera/Toronado transaxle and front suspension, with a transverse leaf from a Vette instead of the torsion bars those cars had. It was a very mild 455 Pontiac, but it ran 12.3 on regular old BFG radial tires, and yanked the front wheels easily. It took some cutting on the trunk, but it all fit and handled pretty well.

If you can find the stuff cheaper, you can put about anything in there.

[BluLightning]

Contact Phil. He probably knows the most about Fiero's around here.

[Dan Barlow]

It's really hard for me not to say SBC but I do know this is a hard swap ( moving the starter to the opposite side for one, bell housing adapter would be two.) So really need to stick with the stock bell housing pattern . So, if it were me I'd go with in this order....# 1 Northstar V8, If I didn't already have the 87 GTA t/a that I don't plan on getting rid of , I would do it. #2 Buick 3.8 , And if I'm not mistaken buik made a smaller cube version , the 3.3

[bishir]

How far is your commute to school? If it's short buy some batteries and go electric! Instant torque!

[CTX-SLPR]

As much as I want to say Buick 3800... I'm going to throw a curveball (like you didn't see that coming) and say Saab 2.3t. Good gravey I love the one in my 9-5 Aero. Fiero guys seem to be getting thier updated stick boxes from Saabs anyway.

Now it will be a hang up for the EFI and as best I could find by searching, no one has done it. That being said, it looks like a modern ecotech is also a hard swap. For simplicity, get the bigger Metric60 out of a later model or go the traveled route of L36/67. If you want to be different with a ton of torque (for a 4-banger) do the Saab.

[>>>>head]

you didn't ask but I'd try to find the LS4 they put into FWD Impala SS/Monte SS/GrandPrix GTP and swap it and the transaxle behind the seats.

[CTX-SLPR]

you didn't ask but I'd try to find the LS4 they put into FWD Impala SS/Monte SS/GrandPrix GXP and swap it and the transaxle behind the seats.

Fixed it for you.

Been done I think. For some reason I'm remembering massive rework of the engine compartment and accessory drive.

[BOOOGHAR]

I know a guy who put a northstar V8 in one, car was stupid fast

[64casteel]

Sorry guys i totally forgot about the thread. Been busy around here. But to school and from school is like a total of 18+/- Miles. And i ont really care what motor to put in it, i just dont want to go through a ton of work just to get a couple more horse and a little bit of torque. I thought about the ls4 but that consist of having to cutt the engine bay and i would like to stay away from that. I thought about that super charged 3800 that came in some of the regal gs's. But Im just trying to get some ideas and try to get my ducks in a row and start collecting pieces that i'll need. Paint comes first though.