Quote:
Originally Posted by Clyde65
I have the 4.8 4l60e in my 65. the only thing you would possibly gain from a stock 5.3 over the 4.8 is about 25 horse. that's it. mpg difference would be minuscule ( 1-2mpg lower on 5.3, maybe)
With mine, I am running somewhere around 300hp and that is more than plenty for me, it gets around 19-20 mpg on the highway, 14.5 or so city/mixed, starts every time and sounds fantastic.
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I was checking the epa site last night, and the variable displacement actually gives an advantage to the 5.3 in the 1-2 mpg range. Thats in a stock silverado, of course
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