I can’t help on a small block but my 6bbl/440 is 8.6 to 1, cranks @ 150-155 lbs, weighs 4160# with me in it and runs 13.1 @ 107. Auto, 3:23’s, full exhaust & 215/70 radials. Just has a little head work, Hughes 215/223, 112-lsa cam, headers & low compression pistons. Went low compression many-many years ago, ('quench' was a new word.) around the time leaded got hard to get. I drive a lot, wanted cheap gas & vacuum advance. I can get as high as 16 mpg @ 70 and always run 87 gas.
) around the time leaded got hard to get. I drive a lot, wanted cheap gas & vacuum advance. I can get as high as 16 mpg @ 70 and always run 87 gas.
