Quote:

Thanks. How much does it usually run ($) to move up on valve size when its all said and done? How much more flow would you realize?

I am shooting for a solid 450-480 horse stock crank/piston 383. I'm wondering how many cfm's I can get out of these 906's (and how much it would cost to get me there). What do they typically flow stock?



just putting in larger valves without spending the money on at least a bowl port ads basicly NOTHING to the flow , so asdding larger valves and doing the required porting puts you into ebrock territory and they will probaly still flow less than a set of ebrocks .

all the 906's i have had CC'd were 90-92 cc .