I have 6.0L 317 heads on my 5.3L. I think i calculated it to 8.6:1 compression. I drive mine to work all the time, all over, Drives like a dream all day long and runs decent for what it is. It sounds weak like it has 150hp driving it around town, I had people laugh at me at the track when I started it up and pulled it off my trailer.
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99 Transam - 5.3L w/ GT45 -10.76 @ 128 w/ 1.83 60ft and broke something.
99 Vette FRC - stock
72 Nova -New twin setup in the works. (former turbo 5.3) |