Carb, timing, or too much fuel??? Roush engine

I have a brand new Roush crate engine that has not over 65 miles, granted I’ve had it running more in the shop than on the road. The problem is that I’m seeing smoke out of the exhaust. It appears to be blue/black, but not the really blue smoke you would see if it was oil. I’m thinking its more gas than anything else.

Here is my setup and a little history: It’s a 351W board to 427 cubic inches. I installed the engine with no problem. Roush did dyno the engine, so I know it was good. I had to remove the distributor to install a 90 degree heater hose adapter. I did mark the outside of the distributor, but failed to take not where the rotor was. I put it back where I thought it should go. I called Roush, and they said the timing should be between 30-35. I must have got it right because it run the smoothest at those numbers. I have an electric Holley fuel pump with a regulator. I’m sure that Roush dynoed it with a mechanical fuel pump. Also, it does seem like there is not the same power as when I first got it. This could be my imagination since I’m having this issue.

Could someone give me some insight on what could be causing the smoke? I’m sorry this is so long, but the more information you guys have the better.

Thanks,
Dave

I do have a pressure guage on the regulator. I did back it down to about 1psi with the same outcome. Timing is not my best talent. In fact, I hate setting timing, but I try.

As far as money, I can't afford to take it somewhere now - with the new Roush engine. ;-)

I also get the "Run-on" effect after the engine is good and warm/hot.

Overall the engine is great. It grunts!!! It dynoed at 538hp and 524torqe. It is beefy!!!

It's an MSD distributor with MSD ignition - no vacuum advance.

One more question - what if I got the distributor off by one tooth when I replaced it. Could I ajust with timing or should it be on the correct tooth?

Thanks,