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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.
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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.