400 BB build issues

Volare_4life said
the plugs are black, it wouldn't idle on its own below 1800rpms, and was running super lean ( in the 16's) on my AEM wideband, but when you hit the throttle and shot fuel down its throat it would greatly richen (10-11's) I tried the spray the break cleaner around everything to check for leaks, I couldn't see any change on the tach, but then again it was around 1800rpms and about 25in of vacuum. the plugs are XR5 NGK's, and I alway put 1-2 hole to help burp and never had an issue, but i will put a t-stat in, put it all back together and see what happens,

-Mike

I guess I still don't understand. It runs hot. It won't idle. 1800 is not an idle speed - you're way past the idle circuits in the carb. You say "there's no lag" but it's already 1100rpm above idle. The engine has some other issues you need to take care of I think. Did you do a compression test or just pump your airl ine pressure into the holes? Did you build it or you got it built? Something's way off here and it's not the cooling system or spark plugs.