SBM Edelbrock/Speedmaster Head Data

Wow Guys, just brilliant and very technical all at once!

The long and short of it is:-

If you haven't got a decent bench, then don't think about all out porting DOH!

There is an old adage, ''if it looks right, then it probably is right''.

Can a SM 170 head be ported to 300cfm without a degree in science?

Great work porting guys, you take my breath away with these flow numbers.:thumbsup:

On a slightly different note, are the CNC ported SM heads any good, what do they flow???