Rear mount turbo

[hookandpull]

I was thinking about doing a rear mounted turbo set up on my H2 for a little more oomph and some better fuel mileage. Just wondering if any on here has ever turbo'd a 6.0 H2.

[guruerror]

I've been reading a bit about these and the first thing that pops out at me as a 'problem' is the air filter that mounts on the unit.

Unless your truck's going to be a pavement pounder I don't think it's wise to have any kind of air intake that close to the ground. You get in some deep water or do some splashy-splashy and you're screwed...and not the good kinda screwed.

[hookandpull]

I understand where you are coming from and completely agree. You dont have to mount the filter on top of the turbo inlet ... You can remotely mount where the turbo gets it air. I dont plan on burrying my truck in water or mud but here washington trails with down tree's, rocks, and snow would be of interest to me.

[[__--MUD--__]]

A turbo will guarantee you will need a tranny rebuild (w/ limited lift again) or a 4L80 conversion. The stock tranny will not hold up to any measurable power adder. For what your going to spend, you will not get a sizable MPG increase to justify it.

Put some gears in your rig if you want some better throttle responce.

[hookandpull]

My tuner and I have been doing some investigating and have found that we may be able to see as much as a 100hp gain to the wheels in as little as 6psi. I fail to see where my tranny would implode from a hp gain of 100 at the wheels when these trucks were designed to tow.... I have no intention of using my rig for towing and or hot rodding. Just a little more power so the engine doesnt has to work as hard going uphill, against headwinds and from dead stops. 11mpg is pure crap and I blame GM for a undertuned engine. We are hoping for 16mpg,s with 6psi. The boost via turbo will help immensely with underpowered highway driving conditions, fuel atomization and is a better option than a blower because there is no parasitic horse power loss. I am new to hummers or should I say GM SUV's but not at all new to forced induction. Being that I have not seen hardly any H2's out there with turbo kits I am willing to take a stab at it and notate any considerable gains (whatever they may be). I wouldnt mount the turbo just simply for "gas mileage" either, but I am a person that likes challenges. I bought the H2 because of the sheer size, presence, and comfort. Now I want to make the engine a little leaner.

[guruerror]

Originally Posted by hookandpull

My tuner and I have been doing some investigating and have found that we may be able to see as much as a 100hp gain to the wheels in as little as 6psi. I fail to see where my tranny would implode from a hp gain of 100 at the wheels when these trucks were designed to tow.... I have no intention of using my rig for towing and or hot rodding. Just a little more power so the engine doesnt has to work as hard going uphill, against headwinds and from dead stops. 11mpg is pure crap and I blame GM for a undertuned engine. We are hoping for 16mpg,s with 6psi. The boost via turbo will help immensely with underpowered highway driving conditions, fuel atomization and is a better option than a blower because there is no parasitic horse power loss. I am new to hummers or should I say GM SUV's but not at all new to forced induction. Being that I have not seen hardly any H2's out there with turbo kits I am willing to take a stab at it and notate any considerable gains (whatever they may be). I wouldnt mount the turbo just simply for "gas mileage" either, but I am a person that likes challenges. I bought the H2 because of the sheer size, presence, and comfort. Now I want to make the engine a little leaner.

16! LOL! You better get a diesel and still go light on the right pedal.

Good luck, dude. A quick search on 'superchargers' on this forum will give you an idea of the tranny issues you'll likely run into with turboing the 364.

Don't blame GM for an 'under tuned engine'...blame them for making the damn truck a 3 ton square. I'm with MUD...get some gears.