Especially when you add say 0.030" lift in with that cam timing. As with any cam swap, piston to valve clearance must be checked. This can be done without removing the head by putting #1 on TDC and putting air into the cylinder to hold the valves shut. Then the valve springs can be replaced withight checking springs. Remove the air pressure and put the rockers back on. The closest exhaust will be about 10° BTDC and intake will be about 10° ATDC. A dial inducator on the edge of the retainer and push down on the rocker over the valve stem will indicate the clearance. You may have to check a few degrees before and after the 10° point mentioned.
