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Old 03-28-2013, 07:59 PM
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Originally Posted by Northern Chevy View Post
That to me sounds like the light duty 3/4 ton as all heavy duty 3/4 tons came with 8 lug wheels and a full floating rear axle { large hub sticking out } . So with that in mind I have a feeling it "should" be the 193 heads but don't assume anything and take a peek under the valve cover to confirm !.

By the way my truck has been up to 14000 feet a couple of times and the word gutless and quitting at idle comes to mind !.
yeah its not a floating axle, i do have a friend who will be burning me some new tunes for the truck and if that fails i have a psare standalone ecm i can install same stuff i run on my twin turbo iroc

i have to move my 18ft camping trailer with it tommorow so ill see how it does as is

the good thing is when i tow to vegas elevation only goes down , and the slat flats is 1000 or 1,500 ft lower then here maybe more
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