does anybody know the cc's of the speed pro flat tops with 4 valve relief?

Typically, about 6cc is what most 4-eyebrow flattops have.

I have Speed Pro hypereutectic flat top's and they spec out at -5.5 cc's, if that helps.


So basically, Damon is right again. ;)

mine are +5
but you can cross reference the part number with summit to be "sure"

OK.. seems folks here have some older Speed-Pro ref materials. So, what is the dome volume on a set of std bore 350 Speed-Pro 7009P's? Only thing I was able to locate is that it is an .020" dome... nothing related to volume of that dome....

thanks, what about the flat tops with 2 valve reliefs?

-6cc's on the piston, or add 6 cc's to the combustion chamber...