need help deciding!?

[DemonGT]

Rick..i ask about the size thing cause im going to get a shortblock and CCM has some good prices and iv heard good things bout them..but they dont list a 331/347...just a 327/342...

i can see my intake hurting a 347 but i thought the street intake flowed enough for a 327/331? and the track heats lower is the same as the street heat lower so i could just get a new upper if i choose...also..whats your reason for saying 331 over the 347? isnt bigger better?

and i ask bout the cam cause they give you a x cam with the shortblock and i think the lift on it is like .542 or something like that and my buddys 347 has a custom ed curtis grind that has .550 and runs very well