I used to work at a pontiac dealer in high school when the fiero's first came out. we would always get the 2.5 4-cyl with a aftermarket turbo kit installed anyone know where I could find one. I remember these things being a big kick in the pants.

You are probably referrring to the Pfaff turbo system which later became HiTech Tutbo under the now defunct IRM Motorsports of Maryland. HiTech was a complete bolt on turbocharger kit for the Fiero Duke engine that raised Horsepower to about 145. While the kit did provide a significant power increase the platform to which is was installed was not an engine ideally suited for boosting. The bottom end of the Duke is weak and the redline is low. It's a reliable economy engine but not a performance engine as many owners with the turbo kit found out! Additionally you could get to the same horsepower figure with a 2.8L V6 upgrade for about the same price.
For a bit more zip and go, and for someone who just does around town driving, this turbo kit probably will satisfy. However, most owners couldn't resist regularly using the extra horsepower, sometimes with disasterous consequences to the engine. It's hard to say how many of these kits were manufactured but I doubt if the number was more than 50-100.
Ed Parks of the Fiero Factory had one of these HiTech turbocharged 4 cyl Fieros but I believe that the car was sold about four years back.

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87GT 3.4 Turbo- 0-60 5.2 seconds -Best
Engine Controls, ECM goodies, Chip
re-programming & odd electronics stuff

You could always go with an LT3. Flywheel hp is supposed to be around 190 without PS pump.

I found out that the mounts are the same ones for our Dukes. I notice that Rodney sells poly mounts for the 2.8 which can be adapted for use on that engine. The Getrag poly mounts are direct swap AND the LT3 Getrag is the updated design that the Fiero never got. I remember someone saying that simply swapping the head to a DOHC head raises the hp to around 250 and they can reliably be built to 350 hp.

Still, they are nothing to an Ecotec, but I like that the LT3 is a Pontiac engine and came as a dealer option for a handful of Fieros. So I can say it is somewhat stock.

But do keep in mind that the internals are cast iron. They can take some serious abuse (the Fiero Indy prototype pace car had a 184t boosted to 16 psi and ran at full throttle for 1.5 hrs before the crank broke), but they really need forged internals.

[This message has been edited by AP2k (edited 05-06-2007).]

What is this LT3 engine you speak of?

Its the turbocharged 2.0L engine Pontiac put into the mid 80s Sunbirds and Grand AMs.

If you will forgive the popups, this has plenty of info: http://www.lt3engine.tk/

quote Originally posted by AP2k: Still, they are nothing to an Ecotec, but I like that the LT3 is a Pontiac engine and came as a dealer option for a handful of Fieros. So I can say it is somewhat stock.

Actually, that engine as far as I remember is actually an Opel or Vauxhal piece.

.....damnit you're right.

Still, its GM....

So let me see if i got this right....

The 2.0 turbo from the pontiac sunbird is a direct swap for a 4 cyl fiero as far as mounts go? It bolts to the transmission, and other engine mounts without modification? The only thing that complicates things is the engine wiring?

If this is the case, why in the world have I never seen or heard this before now? I did hear rumblings at one point about factory installed engines, but i thought these were prototypes that never made it.

quote Originally posted by fiero87: So let me see if i got this right.... The 2.0 turbo from the pontiac sunbird is a direct swap for a 4 cyl fiero as far as mounts go? It bolts to the transmission, and other engine mounts without modification? The only thing that complicates things is the engine wiring? If this is the case, why in the world have I never seen or heard this before now? I did hear rumblings at one point about factory installed engines, but i thought these were prototypes that never made it.

Autozone lists the mounts as the same. The Sunbird Getrag is the same out of the 3.1 Berettas and the cases have the same mounting locations as the Fiero Getrags. I cant guarantee that the mounting U bracket is the same, but modding one wont be too difficult.

If I go with this swap, I will have to worry about wiring when I get to that bridge. I dont know of anyone here that has done the swap, so no one knows how wiring is going to be. However, I cant see it being any worse than swapping on one of our 2.8's into a 2.5 car or even a Quad4.

I'm not worried too badly about wiring, though. The worst thing about wiring is that you have to lengthen the wires from the ECM to reach the instrument cluster (lucky me that the instruments from the Sunbird are plug-n-play AND have a boost meter ).

One might think of just cutting the crap and going with a Quad4, but I dont like that the exhaust manifold is on the rear of the engine instead of the front like on the LT3.

[This message has been edited by AP2k (edited 05-07-2007).]

Fiero 87 - No the turbocharged Delta 204T as it was known is NOT a straight swap. The engine cradle needs no modification but the motor mounts and other support brackets required hand fabrication. The dogbone bracket is another special piece, not like the stock 2.5 or 2.8 dogbone. The engine was a turboed Sunbird GT, made by Pontiac. It was good for 0-60 in 6.4 seconds and a quarter mile of 15.1 sec.
Ed

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