So i'm desperately trying to get my 460 to fire up in my Model A. Its pretty radical and i'm running it on E-85 (trying to run...). Anyways, when i degree'd the cam, i set it straight up, so i know the cam timing isnt off, and i've rolled the engine over checking and re-checking valve timing in correlation to my timing marks on the balancer. I set initial timing to 8 degrees and had a buddy flash the timing light on it while cranking and it shows #1 is firing right at 8 degrees. It acts like its trying to fire, but the caughs up through the carb. I dont wanna crank on it too much as i havent broke the cam in yet, and its making me really nervous that this damn thing wont fire. I'm at a loss...i cant seem to figure out what would cause it to be backfiring through the carb with the timing set where it is... Any ideas?