Ok, one more question on the Holley jetting.
What elevation are you at? If your at high elevation the IFRs are to big. Most OOTB carbs are setup for sea level.
Are the IFRs at the top or bottom? Move to the bottom.
Are the air bleeds tune-able. If not drill and tap for 8/32 brass set screws.
Treat the idle/transition circuit as a mini carb. With an OD trans driving around town you are definitely on the idle circuit.
Drop the IFRs in .001 increments and readjust the idle mixture. You will also find a smaller MAB will allow you to control the idle circuit curve. With the OD trans you are cruising around in low throttle high load conditions when the OD gears come in.
I run a GVOD and find the smaller IFR/IAB lets you get control of the carb in the 0-45 mph range. Getting the idle screws in the 1 turn out range has worked for me to get an acceptable idle in neutral/drive and off idle transition.
Transition slot restriction is another option but I have had success without them at sea level.
Don't get wrap around the axle with the AFR gauge in the idle circuit range. Low throttle high load needs a richer mixture for driveability. Read the plugs, clean but not white for today's fuel.
I'm at 5k feet and when I first put the carb on it was in the 10's everywhere in the throttle except WOT, and that was in the 9's.
No tuneable air bleeds unfortunately.
The air bleed for the idle circuit is where I was going with it because I have everything in range now save for that just off idle cruise.
I am about 1 turn out on the idle mixture.
I'm thinking the idle air bleed restriction will still leave plenty on the mixture adjustment.
I can try the larger PV and see what happens before I do anything else though.
You do not set power valve opening by idle vacuum. You set it by cruise vacuum. If TB has 14 inches at idle he’s probably 22 inches at cruise.
I’d drop a 10.5 PV in there and start over.
This would be better than jumping into modding the carb right off.
I'll recheck the vacuum at cruise and see, as I may be not be remembering it right.
I might not get to it right away though, as like I said, everything seems perfect except for that one small spot.
Now the weather is turning back cold again for a few days.
I'll tell ya, if I had a decent shop or garage I'd probably live in it.:D
Thanks guys.
