Some dyno testing you guys may want to follow on YouTube
There’s mention of the SM’s being bought bare, and being assembled with better parts……… but I wonder if the seats were re-cut and blended.
And if not……… would that be worth anything on a build like that?
The one set of cnc’d SBM SM’s I had here had a valve job I didn’t love.
Cnc’d pretty much right to the 45, and then a 0* top angle.
Looking at the flow numbers in the SBM head thread it appears the prepped/blended unported version out flowed the cnc’d/as from SM version …….. thru .500 lift, on the intake side.
There’s mention of the SM’s being bought bare, and being assembled with better parts……… but I wonder if the seats were re-cut and blended.
And if not……… would that be worth anything on a build like that?
The one set of cnc’d SBM SM’s I had here had a valve job I didn’t love.
Cnc’d pretty much right to the 45, and then a 0* top angle.
Looking at the flow numbers in the SBM head thread it appears the prepped/blended unported version out flowed the cnc’d/as from SM version …….. thru .500 lift, on the intake side.