Anyone out here know the max bore on a 390 without a high risk of blowin a hole in the block?
Nov 9, 2013 #1 lonestar729 9 0 Anyone out here know the max bore on a 390 without a high risk of blowin a hole in the block?
Nov 9, 2013 #2 BuzzGun79 Nov.TOTM 2012 / 2012 TOTY 2,388 55 Personally i would only bore what you need to get the bore straight,if you have to go over .040 do the sonic check.
Personally i would only bore what you need to get the bore straight,if you have to go over .040 do the sonic check.