Budly,

It sounds to me like you engine is running lean. Have you tried enriching the fuel mixture at the Carb? I know that glowing header pipes is supposedly a tell-tale sign of a lean mixture. This can also be caused by bad gas...Since you're just putting the rebuilt engine into the car, my question is, has the car been sitting for a while? (not running?) And has the gas been sitting for a while too? This just happened to my '55 about 3 weeks ago. The fuel had schlacked so bad that it caused the carb to gum up and start running lean. That caused my number 3 header pipe to glow red hot, and I found out later that it also burnt the header gasket at the number 8 cylinder. Anyway, thats my suggestion. Lots a luck.

Firechicken