91 302 motor bored .30 over w/351 heads/cam edelbrock tall intake and a holley 650 double pumper. what do you guys think??? 300RWHP?? i was thinking of a b303 cam swap with new springs and possibly leaving the pushrods and rockers alone for now.(but change them when more $$ comes around)
300??? not likely, more like 240-250. The overbore won't net you 5hp on a good day. Curious..you mention changing out the pushrods, why exactly is that on your list?
well i think a b303(i know there are better cams out there) will liven up the motor a little bit but at the moment I dont have the extra money to upgrade the springs/rockers.....would the spring in the 351 heads hold up to a b303???
Not the springs as much as the miles on the springs...would it hurt to drop on a new set and maybe valve seals...not at all, and not all that expensive either. Bcam is a decent cam but I'd look around before jumping on one until you've figured out by reading what's been previously done with combos like yours.