Speedmaster Small block porting tips and results Part 1

i know there was a post about this somewhere...but there are so many junk posts in all these threads i'm gonna just ask.

these speedmaster heads (and therefore, sidewinder and edelbrock) can use an 11/32", 4.911" long "chevy" valve right???


Can and should, 2 diff things.
Sure they could, if you use all that stock oriented crap and limit the whole thing.

Are you lost?