The heads is not in question, they should be a pick up over his 915 !
The heads will like to be run at a higher rpm package than what he has ran before, maybe as much as 1100 more rpm .
the bigger the port the more air that is there you have to move, That air ,The cam is not one that I would have picked, even if it was laying around,
The '590' maybe a little better 'choice' with the 1.6 rockers, having said that,, think I would call my cam maker, say this is what I have , and know!
what is better with the combo I have run ?
