Hi again - I want to thank you guys - !!!!
I re-set the valve lash on the car last night, using a "be safe" spec of .018" for exhaust, and .012" for intake (even though it appears that a .010" setting for intake would likely be OK.)
The car idles as smooth as butter now!!!!
I have replaced the carb with a remanufactured one now, and I'm not sure how much of the equation the carb was. I'll find that out later today....as I'm going to yank that off and put the original one back on....because of:
NEW PROBLEM!
The car does idle and cruise great now, but it has a totally unacceptable nearly-stalling condition when I stab the gas, just like there's an issue with the accelerator pump.....but I've had this new carb apart to check it, and the accelerator pump diaphragm looks great, also has its spring in place where it should be. (This is the Holley 1920.)
Curious if anybody has any thoughts on what this might indicate? I've read some of your other posts on how fussy and almost "voodoo'like" the maladies of this particular carb can be, apparently.
Thanks again guys - I'm having fun chasing this down with your help....much obliged!!!
Mike T.