Thanks for the responses 058 and Mister460,
Based on your responses, I am going to clean out the exhaust ports, leave the intake ports alone, other than some smoothing and leave the current the valves in. I was wondering about the big step at the bottom of the exhaust port that seems to really reduce alot of flow area. How much, if any of that should I remove? Also, I remeasured the cam last night (I origianally measured the 0.050" duration at the lifter, when 0.050" is speced at the valve (duh!). 0.029" at the lifter is what I should have used for duration measurements. Anyway the intake (and exhaust) duration noe comes out around 234 deg at 0.050" (valve lift) and the total lift is 0.500 (intake) and 0.510 (exhaust). This cam isn't real high performance, but is good enough for my boating needs (cruising, skiing, going flat out every once and a while). Once I get the engine back together and the boat out, I want to try the gas peddle boost control approach (plug the pressure releases on the turbos) just to see (in small increments of course) what the engine will do. Thanks for the suggestions. Tim