You need to toss the Fiero intake and replace it with the L32 unit, then port the heads and match to the intake, use the 272 cam, relieve the exhaust if you are using stock Fiero manifolds and I also used a bored out 62 mm throttle body that I matched the manifold to - result c. 190 bhp.

[This message has been edited by BillS (edited 04-13-2024).]

[This message has been edited by La fiera (edited 04-13-2024).]

[This message has been edited by jelly2m8 (edited 04-14-2024).]

Hahah... thanks guys. Yeah... I know. I know, I know.

Long and short is... I've got a couple of other cars that are quick (or have had), and other cars I will eventually make quick. But this Fiero not talking about my daughter's now, but my Fiero... it was my first car (not counting the 84 Corolla that my brother let me drive now and then). So I've gone back and forth over the years on different swaps, and for me... I want to build a Fiero that's pristine original looking, but has a little bit more modern performance. What I REALY want to do is the roller block engine that Lou and La Fiera are doing, but I ultimately decided that again, I wanted to keep the Fiero totally stock looking. That means keeping the distributor, and even the factory intake. Though I do plan on doing the DAWG mod to it, and probably also the modification between the intake manifold and the runners that he discovered improves "sharing" of oxygen at the higher RPMs.



You can see here (when I put it away in storage), that I was re-doing everything to the "n-th" degree to make it look original. Everything down to replacement stickers, all new NOS parts, and even the stupid rubber band on the spare tire jack. Haha. I was moving from front to rear, painting the entire chassis as I went along. Everything is done all the way to the back window. Even my Mr. Mike's seats are totally factory SE/GT seats, except made of leather, but otherwise will be the totally stock style. I am going with West Coast Fiero headers, and 2.25-2.5" piping all the way back.
Money is going to be less of a concern here, as ultimately I will build out the best 3.4 that I can, while retaining "Fiero Characteristics" like the mostly factory sounding exhaust sound.


What I have so far:

- 3.4 Pushrod / DCC9 sitting in the crate
- 3.4 Heads ported, polished, and port-matched by ARI Racing.
- SI Stainless Steel valves
- H272 Cam
- Crower "Cam Saver" Lifters (for the improved oiling on the cam)
- All stainless exhaust w/ West Coast Fiero headers.
- Port matched from plenum all the way to the heads.
- Bored Throttle Body to 57mm, port matched to the intake (that was what everyone was doing back in the day).

I'm looking to do the DAWG mod, and I'll probably even send the entire thing out to an extrude-hone (don't judge me, hahah) to smooth out the intake.

I have a MicroSquirt kit, along with a FastEFI system (and a 6EFI MSD box). I plan to replace the ECM and wiring harness entirely, all with new sensors and such. Goal is that I'd like to convert to SFI from MPFI, and take advantage of the MSD box as well as improved ECM efficiency (all of which will be hidden away so it looks stock). Still not sure if I want to go with MicroSquirt and save my FastEFI for my Olds 455 big block, or use the FastEFI on my Fiero. Anyway, I can't do any of that until my daughter gets her engine off the stand and back onto the cradle. But as soon as it's done, she'll be doing videos re-working my 3.4 for me. The question I have though... since I'm already going to be pulling the heads, and the oil pump, I'm wondering if I can't / shouldn't just go with better pistons. I bought a rebuilt 3.4 engine with a warranty, which means they expect it to last. But why shouldn't I pull the pistons and put top of the line rings in it, along with maybe a set of pistons that will be a little bit higher compression? I think the factory 3.4 is 9.0:1 compression. My goal is 200hp ... not sure if I'll get there, but I'll be happy if I can at least get 190hp. For performance, I'd like consistent mid-14s in the quarter. I'll be using a stock Getrag 5-Speed, as I'm also converting the Fiero from an automatic (or at least was before I put it in storage) to a 5-Speed.


When those cars are done, I'm going to want to do something similar to what Bill has done, and swap in a V6/60 into a Porsche 944. I know most people do the LS swaps... but I just don't need / want that much low-end power for a sports car. The original Porsche 944 had a 2.5L 4-cyl engine that was essentially the same performance (a little better) than a loaded V6 automatic GT Fiero. I want low 14s from the Porsche 944, and I think I can get that by going with a 3400 or 3500 block, doing some of the stuff that La Fiera and Lou Dias have done. I love how smooth those engines sound and feel (I remember when I used to rent Grand Am GTs in the mid 2000s how well they pulled and sounded). So that's what I'll end up doing. I have a complete Porsche 944 interior with 160mph 924 gauges, along with the super rare Saudi Arabia front and rear aluminum bumpers, all sitting in storage). I just need my daughter to get her car finished! haha...

[This message has been edited by 82-T/A [At Work] (edited 04-15-2024).]