Are you sure that it is the rings that you are burning oil? and Just not leaking valve guides? I wouldn't tak any more off the head. JUST incase you really need to at a later time. Have the block zero Decked. 80 bucks for another crank is not bad. I'm not sure what book your looking in But there is a 10-15 hp differences between the 230 & 250 Depending on the years 67,230=140hp 220 torque 250=155hp 235 torque. 68 230 145hp 220 torque 250 155hp 235 torque Now in 71 the 250 dropped to 145hp 230 torque in 72 down to 110 185 and 73 down to 100 hp 175 torque then 75-79 105/115 hp 185/190 on the torque.
So if you have the 80 bocksto play for the cubes I'd say yeah go for it. Hope this helps }[oooooo]
God doesn't like ugly.
