need help with msd 6014 timing

hi im new to this ls motor i have a 80 chevy malibu i just put a 416 ls stroker with 799 fully ported heads 11-1 comp pump gas motor 58t crank and the cam sensor in front of the timing cover when cranking it to fire it up it pops thru the carb and thru the exhaust the i called msd and told them i have the 6014 box and the guy wasnt helpful im trying get it running dont know to much about the timing adjustment ive been reading on some of the comments here and i was trying to adjust it and i also checked my grounds and all the connections cause before the big motor i had a 5.3 ls truck motor with a carb and had no problem firing it up any ideas or helpful comments will appreciate thanks