On the front of the airhorn is a model number. That number will tell you what size and revision the carb is. Here is Holley's website. http://www.holley.com/division/Holley.asp Here's some more usefull info.
http://www.carburetion.com/CarbID/HolleyID.htm

 

ok, i will check it out,i got the car to accelarate without too much hesitation, but when i launched her see came out and died,out the hole,definatley a tuning issue.

 

I see bad 83 answered ur question already......i sure hope your being easy on her until she is tuned correctly. have you retarded the timing.(please dont ask me how to do that, i always had someone else to it.). i was informed that it helps to keep the motor from going pop with the rich flow as a back up.