unshrouding exhaust valves

The lobe seperation @ 114* and the centerline at 110* shows 4* of advance built into the cam. While that helps build cylinder pressure, that's not really what your looking for. It might be possible to install it a few degrees retarded to cure your problem. Hopefully a cam guru will chime in with a opinion. I'd hate to see you cut the heads if it wasn't necessary?


P.S. I may have misinterpreted in post #10 your early numbers? What i'm getting at is, run your calculator with the .053 gaskets, uncut heads and a intake close of 36.5ABDC and 38.5ABDC.....2 and 4 degrees retarded, and see how that effects the dynamic ratio?