anyone know of any v6 headers out there?

I noticed the the maf sensors are very simalar to the eclipse 90-94 which are very restrictive. One of the upgrades on these cars is to install a "maf translator" (more info on www.dsmparts.com)and a gm 3" maf sensor. I think with this mod., bigger injectors, apex s-afc,headers (if available),and 2.5 in exhuast would be a strong power increase for the v6.
Cams would be icing on the cake if there are any for the engine. Has anyone gone this route in search of HP?

my bad,you dont need a Apex s-afc to control the air/fuel the maf translator has that capibility.

I'm not sure just where you get your info from, but just how much power do you think you could get??
Bigger injectors??? what is the present duty cycle on your current injectors, and why do you believe that you need new "larger" ones?
Headers are available from OZ.
Cams??? for what purpose? Are you trying to "rally" the rig?
What are your intentions with the rig?
Remember it's a fridgedare on wheels.
If you want an eclipse...then go buy one, as you can't turn this rig into one.
Kary

I have looked pretty hard - not for HP so much as torque to turn larger tires with ease. There's not much available that can be bought as a planned kit.

The best options seem to be:

1) 4.3L GM drive-train swap (also gets you better x-fer case gearing)
2) 3.5L swap - I can't confirm that it'll work - conflicting information.
3) 3.0L stroker kit (to 3.3L) - $3500+
4) supercharger - you'll have to design and build your own, but it's possible. An Eaton MP62 would probably be ideal - lots of squirrels that might pop up later, though. You'll also need a boost dependant FMU, headers (or 3000GT/Diamante exhaust manifolds + custom exhaust work) and maybe a larger (or additional) fuel pump. With limited boost of around 6psi, an FMU and exhaust work the stock injectors should be ok and you might be able to push the early 3.0L to 195- 200HP.

Is it worth it? I don't think so - particularly when the change might set off an endless search for "driveability" and reliability/longevity.

It's cheaper to buy another truck.... but if you really want to do it - go for it.

Good luck,
Frank

That sounds like a lot of work and $ for the HP. I wonder how the torque would shake out? And how all that would compare to the Gen II 24V 3.0 and its 177HP and 188lbft (+/- on each)? If I had the time to tackle another project, I'd love to evaluate fitting that motor and the Active-Trac drive train into a V6 SWB...

Maybe an increase of 50 ft/lb or so - hard to say until the job was done.

I also like the 3.5L idea. If I had a spare vehicle and some time I'd be very tempted once I finish the present one.

What really makes the 3.5L swap impractical though is the requirement to change to harness and computer - if you're gonna do all that, you might as well go with the 4.3L and get more power along with cheaper replacement parts.

Nothing's simple for more power on the Gen1 3.0L.

Frank

well with improved air flow from the unrestricted maf, and the addition of cams. larger injectors and the maf translator could enable you to fine tune your engine for peak performance, Why? Why not? Running 33" tires is going to make a big impact on power. Adding hp everywhere you can only makes sence. Im not drag racing the truck, I just want to spin the 33s when i want to mud without worrys. And I have a 90 Eclipse gsx with stand alone engine managment Evo III 16g and tons of other goodies.

I don't think you'll find a better cam than the one that's in the SOHC Montero. The "other" 3.0L folks seem to envy it and there's nothing I've seen available aftermarket.

Your injectors on the 3.0L are rated at 19pph. At stock 43.5psi fuel pressure and an 80% duty cycle, you can push HP to 180 - a big improvement over stock (if you can find a way to do it) - but to get more, perhaps the easiest way is to raise fuel pressure during boost on the stock injectors.

You can put slightly bigger exhaust valves in the heads, but I don't know if it would gain you much - maybe better to use the DOHC heads with a change in exhaust manifolds.

Whatever you gain, it's not likely to exceed 200HP and 225 ft/lbs torque and it's likely to be a hassle - but hey - go for it and let us know how it works.

If you really want to fine tune the engine, get one of these:

http://haltech.com/e6x.htm

Have you checked to see if the 3000GT/Stealth throttle body is larger and if it'll work?

Frank

Hmmm...never thought this was a possibility. Which DOHC heads mate up to our Gen1 SOHC blocks? Has anyone tried/accomplished this?

Oh, and on the MAF...the stck unit does not look restrictive at all, especially for a relatively low HP, SOHC V6. If it were a 4.0L DOHC motor with some more potential in the hardware, I might think about a different MAF. I doubt there's much (if any) power to be gained here.

Eventually I hope to coax more power out of my 3.0L, but money won't let me at the moment. Most of the work is going to be in tuning and custom/machine work. There aren't many bolt on modifications.

If the DOHC heads do indeed swap right on (no custom machining required, just some DOHC parts), that is certainly something to think about. If this route is possible, I will do it, and post before/after dynos. Still don't know if it can be done though.

The S/C idea could be done for $1k, and I think the price/dollar return would make it worth while. I would opt for an M90 though, as the M62 was designed for 4 cylinder applications, and moves less CFM per PSI when compared to the M90. Ideally, I'd get an AutoRotor (lysholm) blower, but this would cost more.

Good luck...mail me if you want, I'm always looking for more 3.0L power.