Holley carb problem

[bullseyeprec]

I didnt find a huge difference in cam or squirter size. I could make the engine starve or hesitate but foun that it can be made to work with a number of different cams/squirters. I did have best luck in number 2 pos. since I idle at 950rpm. what kind of vacuum do you have??? Mine idles at between 14-15" at idle. Thats max vacuum at idle. my 750 dbl pumper had primary idle mixture scrwes in the primary side out about 1 1/2 turns and secondary ones out about 1 turn each. Maybe your problem is that the power valve isnt getting a low enough signal from your gradual acceleration to work it. bigger power valve number opens faster (works with less vacuum) please post your idle vacuum and check your power valve number. It would be best to know the vacuum reading when the car seem to stumble but thats difficult unless you have about 20 feet of vacuum hose. Any thought guys?? maybe power valve is his problem? I had similiar issue and everyone said its float level or accel pump nozzle/ cam so I adjusted floats till I was blue in the face and eventually removed the accel pump cam so I had NO accel pump cam and I stil had hesitation.....powervalve fixed my problems. When I first got car it had a little off idle hesitation and accel pump cam/squirter did fix that but at 2000rpm maybe its his power valve???