Help with QF HR-750

JamesRR said
I sprayed and checked for vacuum leaks. No rpm change when sprayed. I believe this is my cam.

http://www.summitracing.com/parts/cca-20-672-4?seid=srese1&gclid=COrRo-X8q70CFafm7AodIEEAog

My problem is I have low idle because if I turn in the idle speed screw too much it is exposing too much of the transfer slot and thus not running off of the idle circuit. Vacuum is very good in all other ranges. Is a .508 small in a small block street car?

best,
James

Are you able to use the secondary side to increase your idle speed? I have a quickfuel HR 600 and added the Holley Adjuster on the secondary side, which allows adjusting the secondary without taking the carb off. I can set transition slot on the primaries, then adjust idle speed with the secondary adjustment.