what does it mean again, when you bog going into the secondariesfor a few seconds then it goes like hell!!! (on a quadrajet) and how do i overcome this!

kseu my primarys are tuined amazing, but once those secondaries open up, it bogs, then is gone!

 

i asked the same question and a fellow replied that it could be vapour lock, and if you were planning on keeping the carb, what he did was fabricate his own "cool can" which cools the fuel before entering the carb thus eliminating the bog altogether.

 

That's not vapor lock, that's the classic quadrajet bog.

https://www.thirdgen.org/newdesign/tech/quadrajet.shtml

1st topic, "Setting the Air Valve (AV) tension."