What jet and pv size on a 4150HP on SB?

rednesss said
I've read that you want an 8 size split between the primaries and secondaries since the PV adds about an 8 size jet of fuel when it kicks in. So on my 340 I have 68's on the primaries, and 76's on the secondaries and upped the squirter to a 35. Still tinkering with it using a wideband O2 and vac gauge, but it's really close I think. Runs much better than it did when I started. O2 sensor is handy. I have a 6 PV in and run about 15" of vac at idle in gear.

this is good info that i was looking for

im not sure what jets came in this new carb that i have (i think the primary is a 68) since its not the instructions or anywhere on the net....i upped both squirters to a 35 and the hesitation is pretty much gone now. However, i still sometimes (only sometimes) get a lean pop when i step on it or tip in. Right now timing is 15 initial, 36 total, and im pulling 10 inches of vacuum at idle...i believe the carb currently has a 6.5pv, so i assume i will have to change that

now the only problem i have is even when the car is warm, it for some reason doesnt want to idle, especially if i throw it into neutral and coast to a light...sometimes it does, othertimes it doesnt, even when warm