.030” radial clearance from the exhaust valve to the bore wouldn’t bother me.
Since the valve and bore are not on parallel lines...... and the direction that the valve is moving vs where it is in the bore...... as the lift increases, the clearance decreases.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
