Holley Carb

[Hitman73]

I had to post this about my local mechanics i called 3 of them 1 right off the bat said $250.00 to rebuild, then the other call was turned down, and then the last call he told me he does not rebuild Holley's anymore from unhappy customers. He said that Holley carbs are hard to clean all of the small holes and were dirt gets and cant be cleaned. HE said i just dont do them anymore? he then suggested that i buy a edelbrock 600-650 cfm carb for a swap he said that he likes the edelbrock better and has never had a problem rebuilding or cleaning one.

I have been having some trouble with my Holley 4779-C, 4150 dp 750 cfm carb. Taken from Holley website- (During acceleration tests, if you notice that the car first hesitates and then picks up, it's a sure bet that the pump nozzle size should be increased. A backfire (lean condition) on acceleration also calls for a step up in pump nozzle size. Conversely, if off-idle acceleration does not feel crisp or clean, then the pump nozzle size may already be too large. In this case a smaller size is required.

My car does this exactly- if you notice that the car first hesitates and then picks up, it's a sure bet that the pump nozzle size should be increased thats what my carb does. There is an annoying hesitation on launch then it picks up fine.

I will be getting a bigger pump nozzle and try that. My question is are the Holleys that much of a pain in the ass as the mechanic says?. With the 750 carb on my 351 cleveland could it be to much carb any suggestions?. I am also running it with a Torker 351 manifold i bought the car this way. 2 of them said $250.00 to rebuild is that reasonable price to ask on a rebuild i live in a real small town, and what Pump Nozzle size should i try first sizes are .025" to .052".