Carb help
Jcrane88
03-23-2009, 12:00 PM
I'm hoping there is someone here that is somewhat familiar with holley carbs
This Question is about the 84 camaro in my signature.
On this car i have a 750cfm holley Double pumper. The car starts up great, hot or cold, will purr forever. when i put my foot in it under load it stalls and almost dies, if i force the issue it will die. if i gradually get in it, it will rev up just fine. this carb has been recently rebuilt. but i dont know alot about tuning it so i could be missing something there. if someone could point me in the right direction it would be very helpful
thanks
john
This Question is about the 84 camaro in my signature.
On this car i have a 750cfm holley Double pumper. The car starts up great, hot or cold, will purr forever. when i put my foot in it under load it stalls and almost dies, if i force the issue it will die. if i gradually get in it, it will rev up just fine. this carb has been recently rebuilt. but i dont know alot about tuning it so i could be missing something there. if someone could point me in the right direction it would be very helpful
thanks
john
Genopsyde
03-24-2009, 01:58 AM
sounds like a bad power valve to me
Morley
03-24-2009, 02:13 AM
A 750 DP on thst engine is going to be too much carb...you'll flood it. You'd be better off with the 650 vac sec...Or for better mileage an old Rochester Q-jet.
Jcrane88
03-24-2009, 12:32 PM
i meant 650. It's not a flooding problem as far as i can tell
wrightz28
03-24-2009, 01:08 PM
Try hitting up Holley's website, they have some detailed troubleshooting steps.
Morley
03-25-2009, 02:02 AM
Check for he blown power valve as Wright suggested...also check that the float isn't stuck. If it bogs like you say it is a fueling problem and 99% sure it is over fueling.
Personally I don't like Holley carbs...sure thay are "simple" but they tend to need lots of constant tinkering...A well set up Q-jet will outperform a Holley and once set up it stays there.
Personally I don't like Holley carbs...sure thay are "simple" but they tend to need lots of constant tinkering...A well set up Q-jet will outperform a Holley and once set up it stays there.
wrightz28
03-25-2009, 08:55 AM
Actually it was Geno with the power valve, but I was thinking along those lines :lol:
Genopsyde
03-25-2009, 12:01 PM
yea...no credit at all.
Morley
03-26-2009, 12:16 AM
yea...no credit at all.
Sorry. saw Wright's name in the "last response" field and it stuck.:banghead:
Sorry. saw Wright's name in the "last response" field and it stuck.:banghead:
Genopsyde
03-26-2009, 01:36 AM
lol, it's ok, i forgive.
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