Re: 5.3 or 6.0 in my 1970?
I don't know guys. The trailblazer has the 6.0 and we get around 13-14 mpg. I think it would be a little better in a lighter (less than 6k lb) truck. It scoots the Trailblazer along pretty quick, I couldn't imagine the speed in a swb truck weighing in around 3800lb. I think i would spend the extra money on the 6.0 if you are really after power. If you are wanting mpg I would get the 5.3 just because it would be cheaper initial purchase and the gas would be cheaper also. Just my opinion though.
Shawn
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1972 C20 Suburban- Big Blue Betty
'56 Chevy Bel Air Sedan- Frame up Restoration
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