how much horsepower from my 318?

i have this 318 i got from a 86 dodge panel van and want to know if anybody on here can tell me about how much horsepower it has. the stock info online says about 230hp and i got a 4bbl edelbrock street-master intake with a 600cfm Holley carb on top with a one inch spacer. i also put a pair of long tube headers on it and got the heads and intake cleaned and ported. the transmission is a stock 727 auto with a 7.25 stock rear-end. that's about it. its going in my 67 4door valiant with 255/60/14 tires in the back. could any tell me how much horsepower to the wheels i am looking at??? i know its probably a dumb question.