OK here is the problem...
I recently had to replace the cam in my supercharged (10lbs of S-Trim boost in my 408 Mustang. It turns out Comp Cam originally gave me a cam which had been ground down past the hardend metal. The cam was brittle on several lobes. I discovered this while hunting for a low oi pressure problem. (I discoverd the oil pump had been severely gouged due to metal in the oil).
Anyhow, they sent me an identical cam. I reinstalled it exactly as the old one which came out (4 degrees retarded). However the car was severely down on power. I rechecked, rocker arm setup, valve springs, distributor install, everthing which I thought could cause this. I even did a leak down check on the motor and it came back fine; 4% for each cylinder.
I know this is a pretty open ended problem as there could be several culprits. However I am wanting to eliminate the Speed Pro as one of them. Any advice is appreciated.
Paul
BTW--I sent the motor off to my builder to see if there is any problems.