yea i think what i said was not to go over .040 , because with my truck i HAD to have a v6 radiator to keep it cool at highway speeds
test your compression, if its not under 130 psi and you dont use oil, dont bother, my original 20R had 80 psi on each cylinder when it got rebored, but the pistons wobbled inside the cylinders so much you could easily see the rings
get a header, a 2 1/4 inch exhaust, and a nice cam with .430 - .450 lift
there more power in the heads than in boring ,
