RB,
You clown, I never said the HEI adv mech was the greatest ever. What I did say is that the design allowed for easy changes to the curve due to the variety of weights/centreplates available.
Twice now in this thread you have introduced air bleeds into an ign thread. I ignored the first time....
Like just about everything else, you are WRONG about air bleeds.
I will highlight it for you in case the glasses are not working or YOU are becoming senile.
"BIGGER MAIN AIR BLEEDS START THE SYSTEM LATER, NOT EARLIER".
Don't take my word for it. Mike Urich, Holley engineer & later VP: