Which book are you referring to? I have David Vizards 'Super Tune and Modify Holley Carburetors', and while it does talk about adjusting the pumps, it really doesn't go into depth on the subject.
Sounds like I have a similar issue to what you had. Mine is lazy from idle-1500 until 2500rpm when flooring it. I will try what you did just for the heck of it today. What I am struggling with is I don't know if my symptom should be addressed on the primary or secondary side? I do enjoy making adjustments to try to get it the best it can be, but I have been fighting this engine for 2 years now. Right now it is the best it has ever been. My biggest problem was a bad distributor, but once I chucked that in the trash things are slowly progressing.....
No, not bogging at all. I would love to run more initial timing, but can't because of hard starting when hot. The bad distributor was from Don and I spent 2 summers dealing with him on that. This motor just doesn't make enough vacuum to run hooked up like yours.
So do you think I should try going from 80 to 78 secondary jets to see if that leans out the wot a bit?
might be too much pump shot.
I'm no timing genius but I'd think all the carb tuning in the world wouldn't wake it up if the initial isn't where it needs to be? How do the drag guys get around not having enough vacuum... do they just deal with the hard cranking?
I think most run theirs locked at 35 or whatever they want, but then have the ignition wired up to get the motor spinning, then flip a switch to let the spark come through.
