The general rule of thumb is to start at .120 thou. But it ultimately depends on how light ur rods and pistons are then drill holes in the counter weights to balance it. If u take to much off u will need to add Mallory metal which gets expensive. Kim
Thanks I'm using icons&676 h beams.this will have a 558 lift lunati can with performers i 'll add 1.6 rockers if I need to . I don't need big horses for bracket racing,real 340 demon,we don't want to cut up.