TBR7 Won't start

[Douglass]

This sounds to me like either the cam timing is off, or your valve lash was set at the wrong TDC. There are two TDC points, one at compression and one at exhaust. If you set the valve lash on the exhaust stroke, where both valves are actually being activated by the cam a little bit, then your valve lash will be enormously out of spec. The easiest way to know is to roll the motor over, and watch the rocker for the intake valve. Once it actuates, the next T mark on the flywheel will be TDC for the compression stroke. It wouldn't hurt to double check and make sure you have this right.

Dan suggested to check this, Have you verified this is correct?

I would be interested to see what you are able to find with the cam timing.

I agree, if you can swap the carb, and it runs great in the hawk I think it's time to move on.

Also, if you are running super rich it can cause the cat to glow.