Speedmaster Small block porting tips and results Part 1

I had my bench set up to flow the exhaust side so while it was in that mode I ported the exhaust. Intake numbers coming soon.

I did lower the shortside a little Sunday (.080) and it responded with 4-5cfm max so we are in the low 280’s at .700 with more on the table.

I think this post ran out of steam. We’ve hit a new low.


Well I’ll say one thing, this head just isn’t responding like it should and I’m to the point last night where I started rounding up my old stone grinding equipment. My stone dresser is in need of some pieces so I guess I will be placing an order today or tomorrow. I’m thinking about trying a 75 degree bottom cut. I know a 2.05 or 2.08 valve would help this seat issue but I’m not ready to give up on the 2.02 valve yet.
I don’t know about other. But I’m excited to here about the latest investigation...........