You're going to need the Edelbrock intake. The "recommendeded" carb is probably a 390 CFM edelbrock or Carter. IF you can find one.
I THINK the Edelbrock is available with a 4 barrel base plate.
Since you're chucking the computer, you're going to need an old (early 80s) V6 distributor. Probably from an S10. Those were the only ones that had a chance of being non-computer-controlled. You might be able to find an aftermarket distributor, but I know nothing about those.
If you have a manual tranny, you're going to need a zero balanced (aka neutrally balanced) flywheel. That could be from an 88 V6 Fiero, or from any manual tranny 3.1 FWD car. (91 Cavalier, etc.) Either engine - 3.1 or 3.4 - will require the same flywheel.
If you have an automatic, the 3.1 flexplate will be fine. I think (but I'm not sure) the Camaro flexplate is too big. A 3.1 flexplate will work.
You will likely need the Fiero timing cover and oil pan. The design changed in 87. You will need to get both of the same vintage. (i.e., an 87/88 pan will not work with an 85/86 timing cover.)
You will need Fiero exhaust manifolds and crossover. It MAY bolt to your stock exhaust, before the cat, or it may not. If not, you'll need a V6 exhaust system, too. Or at least a V6 "cheater pipe" to replace the cat.
You will need the Fiero alternator bracket, dog bone bracket, and dog bone.
You will need an 88 V6 alternator. (The 88 Duke alternator has the mounting bosses in different places. It won't bolt up to the V6 bracket.)
I'm assuming that you are not using A/C. If you do, you will need the brackets for that. The V6 compressor and lines are different from the Duke.
I don't know how to retrofit the Duke compressor to the V6.
You will need the Fiero V6 pulleys and belt.
You will need to drill the starter pad if you use the 3.4.
You're going to have to figure out how to interface your wiring (charging system, gauges, etc.) without the computer.
You will need to fabricate fuel lines to the carb. Don't know about the return line. Depends on what sort of fuel pressure regulator you run.
You will need to fabricate heater hoses, from the engine to the hardlines.
I won't sugar coat this...
I have done several swaps over the years.
One was a V6 in place of a Duke in an 88 coupe.
Compared to what you're trying to do, the V6 EFI swap was a cakewalk. It was all plug and play. ZERO fabrication.
If you can find a Fiero dropout, with ECM and harness, you're way ahead of the game.
The 87 V6 addressed the oiling problem. The 88 became internally balanced. Every bit as good as the 3.1 and 3.4.
But now you have enough info to get you started, either way.
Raydar88 Formula IMSA Fastback. 4.9, NVG T550 Praise the Lowered!
[This message has been edited by Raydar (edited 03-29-2014).]