FireDemonSiC

This is just an idea I'm tossing around at this point and I've seen it done before but on mostly stock motors.

How well do you guys think an intercooled M90 supercharger from a 3800 would do on a 334cid TPI with Trickflow Super 23 heads that spins a bit north of 6000?

I ask because the general consensus is that the units are barely adequate for stockish V8s. I'd be looking to push around 5-7psi with it.

GenX'Motorsport

Just read youre build thread. Awesome Car! It will work, but with the heads you have. It will not make more than maybe 6/7pd's. If I was you. I would look into a Procharger P1SC,D1SC or the newer variants of them, the D1X, P1X @ 12 Pd's. You will have one nasty little Street Fighter. Prob about 500+ to the wheels. Maybe more! I had a cammed 305 with every other mod in the world. Built tranny, stall, suspension, gears, u name it! And it made 430's to the wheels. On stock heads. Go bOOst on that baby. You will luv it! Smoking C6 Vettes, and 5thGen Camaros. And saying it's a 305 TPI car. PRICELESS!

Orr89RocZ

iTrader: (20)

Not gonna work

FireDemonSiC

Even 5psi would be decent.

I'm really not looking at a procharger at this time considering I'd be spending at least $2500 not even including the necessary fuel injectors.

An M90 setup I could have running for under a grand. The most expensive part would probably be the intercooler.

What about maybe an M112?

Thanks BTW GenX. Have a lot into the setup.

GenX'Motorsport

With all the $$$ you do have into your car. Don't cheap out on a Power Adder. Just wait and do it right the first time. Just keep your eyes peeled for a used PC'er in the Classifieds here. That's where I bought my first one. Got it for a steal!

Orr89RocZ

iTrader: (20)

Its gonna be some work to get an m90 on it. And with the motor you have you would need to turn it hard to make good boost

M112 would be better bet if you can find one.

There was a thread or 2 from years ago with a guy running an m90 on a stockish 305 tpi making 5 psi.

A few psi would make some great power gains. Just not sure a m90 will put out enough flow to make few psi without overspinning it

FireDemonSiC

I was afraid of that with the RPM I turn.

I was reading that thread on the 305 and the M90. I know how I could make it work. Just wasn't sure if it was going to support my setup.

As far as the money, I don't have a ton to sink into a power adder considering I'm probably going to be looking at doing a Trans build when I do. The current one is barely holding all motor and I still have yet to put even a 100 shot to it.

Street Lethal

iTrader: (16)

Don't think of it in terms of psi, think of it in terms of flow. The M90 at "x" RPM will flow "x" amount of air, and that air is good for "x" amount of horsepower, all depending on pulley size of course. Example, let's say an M90 at full capacity will provide enough air to support 300 horsepower, could be more, could be less, but let's just say 300 horsepower. Now, if you take that M90 and use it on a V8 engine that is already making 250 horsepower naturally aspirated, this of course doesn't mean you are now making 550 horsepower, it means you are making 300 horsepower, which equates to 20% more air, totaling 3-psi. It's not about how much psi you want, because every engine is different, and a better breathing engine will make less psi using the same M90 and pulley than a less efficiently breathing engine. So the idea is to determine how much power your engine is making naturally aspirated, then choose your blower potential based on that. Like was already recommended above though, the M112 would be a much better choice for your setup...

- Rob

FireDemonSiC

I agree. I am getting the car dyno'd next month and will post back with further elaborations.

Vanilla Ice

A gen 3 m90 is a waste of time.
A gen 5 m90 is 90% a waste of time.
I'd say it's an exercise only. If you are able to fabricate why not junkyard turbo?

FireDemonSiC

Because I have no intentions of doing a turbo setup on this car.

Vanilla Ice

Either way, the m90 will struggle to surpass 340whp. If your goal is above that look somewhere else.

Orr89RocZ

iTrader: (20)

I doubt it would make anywhere near that power. They make 8-12 lbs on a 3.8...High flow heads and those cubes/long stroke, the m90 would barely be making much boost. 112 would be what you want

Vanilla Ice

It would be a STRUGGLE but it has done it on the 3.8 platform.
Most commonly you'd be looking at 280-300whp max.

Thirdgen89GTA

iTrader: (5)

If your goal is to raise intake air temps then go with the M90, thats about all its going to be good for.

Toss a set of good heads at the car with a mild cam and Winning. Or go the M112 route.

GenX'Motorsport

Trust me. forget these factory little bike pumps. Just save up and do it the right way with a Centri, like a Procharger, Vortech or Paxton. Once you add the right system to your car. It will make the Power you've been looking for. Just wait, and do it right one time.

anesthes

iTrader: (12)

Who was it like 10 years ago that ran two of them? Bob? Saturn or something? Ran a crazy setup with two M90s on a TPI 305.

Another forum member has a 112 blow through carb and I hear it runs great. I searched and searched and I couldn't find a 112 with a SBC manifold, so I don't know if those are no longer in production.

I'd love to run a 112 with a SBC base, rear throttle body and a vortec dizzy (24x conversion) as a project. I bet it would be a nice little street setup. I'd even love to try that in one of my speed boats, but I can't seem to find a SBC or vortec base. Very odd.

-- Joe

Orr89RocZ

iTrader: (20)

https://www.thirdgen.org/forums/fabr...-firebird.html

Pocket did it

SARURN5 Did but not a thirdgen

anesthes

iTrader: (12)

You have to really respect that level of fabricating.

I found a thread on another forum of a guy who milled an intake for a 112 for his LT1 (ybody) and it was quite impressive.

-- Joe

Street Lethal

iTrader: (16)

Agreed. It's cool to do something interesting, and to be acknowledged for the work put into it, but at the end of the day, the hood is closed, and you're on the street needing the performance, and the guy next to you doesn't really care what you have, it's all about who is first. Even light to light, it never goes away, you find yourself doing it constantly lol. Once you delve into the fabrication process, it becomes very time consuming, and before you know it, a lot of time flies by and you don't enjoy your ride. You even lose interest... ask me how I know lol. Do it right the first time, save for a kit if you want some blower power, dedicate a day to putting it on, and enjoy that ride. I would seriously consider a P1SC pullied up, as well as a larger crank pulley. Will give you all the power that you need, and still turn heads when you pop the hood...

- Rob

anesthes

iTrader: (12)

I had a P1SC for a while. They are not very efficient. Straight vanes, and it almost boils the lube they get soo damn hot.

I hear the D1 is a much better head unit.

Supposedly the 112 is around 72% efficient, which is on par with a Vortech, Powerdyne, etc. The 112 on the Ford applications has ports in the intake manifold for water cooling. They use an air/water intercooler.

Which is why I'd love to try one on one of my boats if I could find a SBC base for it.

-- Joe

Street Lethal

iTrader: (16)

I remember your P1SC in your vette. Believe me I would have recommended Vortech, but those boneheads discontinued their TPI systems. Not sure how high he plans on spinning that engine, or if it's even forged, that's why I suggested the lesser P1 head unit. Not the greatest, but definitely better than a single M90 though, that's for sure...

anesthes

iTrader: (12)

The P1SC was on the Firebird. The Vette (TPI/Miniram) had a powerdyne. I sold the P1SC to a forum member, sparks or something like that, but I haven't seen him post in forever.

I was looking at my '94 Vette the other day, and making a blower bracket for it would be easy. There is nothing on the passenger head except for the coil and the ICM. But it would require a reverse rotation blower, which is hard to find cheap.

Back to topic, I agree with everyone else a single M90 is too small for a 5+ liter car, but I think the 112 would rock and fit under a 2.5" cowl.

-- Joe

Street Lethal

iTrader: (16)

Ahh, that's right, it was a powerdyne.

anesthes

iTrader: (12)

Haha you found my old video.

-- Joe

GenX'Motorsport

D1SC or the new D1X. (Think that's what it's called.)