Can a 3.8 GM V6 Series II Eaton M90 L67 Super Charger be made to work with a 3.4 V6 GM Engine

I was researching the internet on facts but could not find any real answer

I was thinking that the intake would need to have a bracket made to fit both the 3.4 V6 intake and the super charger / gasket

Any answers would be greatly appreciated Thankyou for your time

[This message has been edited by canaman (edited 06-06-2017).]

Honestly it would probably just be best to use the 3.8. If it is possible by the time you got it all to work you will probably have spent way more than just getting the 3.8 to start with.

quote Originally posted by Spadesluck: Honestly it would probably just be best to use the 3.8. If it is possible by the time you got it all to work you will probably have spent way more than just getting the 3.8 to start with.

I would tend to agree with this.

The supercharger is probably as wide as the entire Fiero lower intake. The only way I can think of to make it work would be to build a platform around the perimeter of the intake that the blower would bolt to. The injectors and fuel rail(s) would have to be under the blower, and that would expose them to all the heat that would be created by the blower compressing the air. (4.3 Chevy V6s have the injectors inside the intake plenum, but they don't have all that pressure and heat to contend with.)

You might look into this.
http://www.fageolsuperchargers.com/
It's a supercharger designed for the 2.8, as installed in an S10. It's designed to mount the TBI on top of the blower, however.
It's also a bit undersized for the 3.4, as designed. Would probably require a smaller pulley, and bunch of fabrication, to make it work.

Nearly anything is possible, but is it worth the time, effort, and expense.

The 60 degree V6 is much narrower between the valve covers and the injectors are more centrally located. You could likely pull the upper plenum, make a rectangular box type plenum that will bolt to the middle intake, and the supercharger could bolt on top. However this will be much too tall to clear the rear decklid.

Another option is to divorce mount the supercharger with a bottom plate that will take the supercharger outlet and funnel it down to a round tube that could be routed to the stock fiero intake.

Both methods require a significant amount of metal fabrication. Unfortunately no one sells a bolt on kit.

Anything is possible.

Here's my friends DOHC 3.4 in a Monte with an M90 on top

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03 Buick Regal. 13.0x @103
87 Fiero GT. L67, XP, Ported heads, SD headers, 3.2.

Everybody will tell you it's a waste of time, not worth the cost, you can get more power from another engine, etc etc. That's why you should do it.

The short answer is yes, it can be done.

Anything can be done with enough money.

But, honestly you can do a turbo cheaper and have more fun. Easier to adjust boost levels.

If you're that worried about "bang for your buck", then you shouldn't be modding a Fiero. Just a thought.

I tried this on my 2.8 quite a while ago. My original idea was to make a sort of dual-log manifold that bolted to the fiero middle intake, but left room for the injection stuff beneath it. This proved to be complicated, and to make it come out square eould have been a challenge. I ended up trading the supercharger for a turbo. The turbo turned out to be junk :P

However, I recently learned to weld aluminum, and then I had another idea that I think would work quite well. What if I were to take the stock fiero upper intake, shave down the ridges on a mill, then cut open the top of it, weld the original intake hole shut, and then weld another plate to the top thats drilled with the supercharger's bolt pattern? Id just have to make sure it lines up properly with the serpentine belt. But it would have a much higher likelihood of coming out nice and square, because its got way fewer pieces and aluminum tends to stay put when you weld it anyways

It would stick way out of the trunklid, but hey, youd have a supercharger so who cares

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quote Originally posted by Frank2: here's the goal: Build a mid engine car 1/2 as good as a Lotus Elise at 1/10 the cost.

I have no idea what Im doing, but Im doing it.

IG: @giveintogravity

quote Originally posted by canaman: Can a 3.8 GM V6 Series II Eaton M90 L67 Super Charger be made to work with a 3.4 V6 GM Engine

Food for thought : https://www.fiero.nl/forum/Forum2/HTML/138645.html

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