NEW EDELBROCK 1405 600CFM CARB POPING/BACKFIRING

[Amberly Chamberlain <amberlychamberlain@sbcglobal.net>]

LISTERS,
 
I HAVE JUST INSTALLED A 302 ROLLER AND T5 IN MY TIGER AND CAN NOT GET CARB 
TUNED.  I HAVE A NEW FILTER AND NEW CARB BUT CAN NOT GET IT TO STOP 
POPPING/BACKFIRING INTERMITANTLY.  TIMING IS AT 12 DEGREES ADVANCE.  CAR IDLES 
GREAT AND THEN POPS SPECIALLY ON ACCELERATION.  ANY SUGGESTIONS??????????  IS 
THE CARB TOO LEAN???  I DO HAVE THE HEADERS UNCORKED.  GIVE ME SOME 
SUGGESTIONS.  I PLAN TO GET A CALIBRATION KIT TOMORROW.  
 
THANKS
FRANK