Hopefully you guys can help me out. I have searched the various forums, but am still stumped. I just finished wiring up the ignition/starting circuit on my newly rebuilt 406SBC (from a builder at Phoenix Engine). Anyways, long story short...after priming the oil pump, and carb float bowls, and setting the HEI dizzy...I cant get it to start up. Im sure the dizzy is NOT 180* out because it is a D.U.I. with a clear cap, so the rotor/pointer is easily seen. As the engine is turning over, all Im getting is backfiring out of the exhaust and the carb as well...sometimes flames too through the carb. The carb is freshly rebuilt too and the plugs are wet, so there isnt a fuel delivery issue. Im using 91 octane gas (needed for the 10.5:1 compression) too. The only thing I havent made sure of is that there is a good spark, because I didnt have a buddy around to help out. However, I can turn my HEI ignition on and off in the cab, and with it off...the engine just turns over...when I turn the HEI circuit on, it definitely sounds like its trying, but nothing is happening. Its frustrating and especially cause I gotta try and respect the neighbors...I cant sit out there trying over and over with constant back fire. Any help is greatly appreciated. Thanks p.s. Pauly, if u read this...u should PM me and come over to help me with this thing...Im in Mesa too. I will hook u up with beer, or pizza or money or whatever.