Question about M90 intake manifolds

[leong6gtp]

so is it safe to say that this wouldnt work on a 3900 lz9? ive been dying to sc or turbo my car

[Canyonero]

I would like an M90 please.

I'm not too concerned with clearance in my Isuzu so I'm all for the weld-atop-3400 style, if it works.

[ForcedFirebird]

If you are super or turbo charging a car, the P/S pump relocation should be a simple fix

I'm interested in the electric pump, do you know what cars they came in? I don't have enough room to comfotably fit forward facing headers, A/C, and P/S -- the A/C is staying regardless. The fbody has a funky kmember location in comparison to the engine.

[TurboGTU]

As far as the PS pump goes, you can eliminate it and try a Honda electric hydrolic steering pump. Thought the 3500 cars came with them too.

[mcgavinz26]

In a fiero you may as well put the supercharger right on top of the intake. Thats what my plan is eventually, once I find a fiero at the right price. My intake will bolt right onto your fiero if you want to try it out. You have to promise to give it back in one peice when you are done though

Seriously though, I've looked at it a lot too and there no low profile way to get an M62/90 on top of that engine while using the original lower intake manifold.

I don't think there is a way to machine a one peice intake, or even two peice, to replace the whole intake. That would end up being pretty pricey anyways.

Anything you do that moves the injectors from pointing at back of the valves would be a hit to your performance, but probably not much as long as you didn't switch to some sort of tbi (gross).

The only thing that miiiiight work is hacking up a LIM and turning the part where all the runners criss cross into a plenum of sorts and welding/machining something up there. I have no idea how you would cram injectors in the mix with that though. Then you still need to relocate the power steering pump and do something about the couple inches you need on the hood.

[geldartb]

You can always do it the ghetto way, like that beretta had. The plenum was machined down, and an adapter plate was made to fit the SC, then welded the plate to the plenum that was machined.

that would be this guy who did it. mcgavinz26 a few posts up.

if i had a spare hood id be all over it since i got an m90 in my garage.

[silvergtjrad]

You can always do it the ghetto way, like that beretta had. The plenum was machined down, and an adapter plate was made to fit the SC, then welded the plate to the plenum that was machined.

[grandsport3.4]

i am very interested but i bet it wouldnt fit under my 93 firebirds cowl

[merlot566jka]

I've got a fiero with a 3500...no power steering, no hood clearance issues...... its about as simple as a manifold to me. and the injector placement isn't that hard, they can almost go anywhere, even the intake port of the head. and since its supercharged they don't really need to be aimed at the back of the valve (even tho that's the best idea)

I was just wondering if I could get this sparked up again, sure would like one for the 3500 fiero

[mcgavinz26]

This would be cool, but harder than it sounds to actually produce. The 60 degree valley doesn't leave a lot of room for injectors if you cram an m62 or m90 in there. I think that the biggest problem is finding a good spot to locate the injectors after you get done burying the supercharger down low. There really isn't an easy and cheap way to do this. Also, you still need to find a spot to stick the power steering pump when you are done. And visibility really isn't a problem if you pick up a few inches in height. Whenever people sat in my car the first thing they would say was something like "huh, that doesn't really block your vision at all does it?" The hoods have a pretty good slope on them and the seats in something like a beretta or grand am sit you up higher than you realize. I was still looking down on the top of my m90 when it was installed.

CNCguy's got some good skills from what I can tell. If there were a way to do this that were worth it, him or someone else would have done it already. A lot of people with the right tools have talked about doing something like this.

[G-U-NOT]

I was actually thinking about starting a project like this and using the M62 thatI have laying around! I think it would sell the most for the 3.1 mpfi engines.... you know, for the guys who still have the older engines in their car and just want a good bolt on without having to do a motor swap!!

[CNCguy]

what ever happened to this?

Too many other projects and a lack of time and money.

[IsaacHayes]

I'd rather see a remote mount kit for down where the A/C was... then you can run a stock hood, and run piping to intercool...

[merlot566jka]

what ever happened to this?

[AaronGTR]

I asked about the drive belt already but... you could do an 8 rib drive for the SC without changing all your other pulleys. You just have to make an adapter pulley with an 8 rib on the front for the SC and a 6 rib on the back for the stock belt and run the SC on an independent belt and tensioner. The GTP's are like that, they don't run off the same accessory belt.