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03-23-2009, 12:00 PM
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#1 | |
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AF Regular
 Join Date: May 2005
Location: Martinsville, Illinois
Posts: 388
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Carb help
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
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1984 Camaro 5.7L 350 700R4 Holley 650 Cfm Edelbrock Performer Intake-Manifold Crane Cams Duration @ .050": 204/214 Lift:420/442 Summit HEI Distributor Hedman Shorty Headers Hedman Y-pipe Dynomax Turbo cat-back NOS Decal VTEC Decal |
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03-24-2009, 01:58 AM
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#2 | |
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The President
 
Join Date: Nov 2003
Location: Willoughby, Ohio
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Re: Carb help
sounds like a bad power valve to me
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03-24-2009, 02:13 AM
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#3 | |
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AF Enthusiast
 Join Date: Jul 2004
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Re: Carb help
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.
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03-24-2009, 12:32 PM
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#4 | |
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AF Regular
Join Date: May 2005
Location: Martinsville, Illinois
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Re: Carb help
i meant 650. It's not a flooding problem as far as i can tell
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1984 Camaro 5.7L 350 700R4 Holley 650 Cfm Edelbrock Performer Intake-Manifold Crane Cams Duration @ .050": 204/214 Lift:420/442 Summit HEI Distributor Hedman Shorty Headers Hedman Y-pipe Dynomax Turbo cat-back NOS Decal VTEC Decal |
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03-24-2009, 01:08 PM
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#5 | |
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is bring'n sexy back
 
Join Date: Mar 2005
Location: Crookfield, Illinois
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Re: Carb help
Try hitting up Holley's website, they have some detailed troubleshooting steps.
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03-25-2009, 02:02 AM
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#6 | |
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AF Enthusiast
Join Date: Jul 2004
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Re: Carb help
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. |
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03-25-2009, 08:55 AM
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#7 | |
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is bring'n sexy back
Join Date: Mar 2005
Location: Crookfield, Illinois
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Re: Carb help
Actually it was Geno with the power valve, but I was thinking along those lines
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03-25-2009, 12:01 PM
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#8 | |
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The President
Join Date: Nov 2003
Location: Willoughby, Ohio
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Re: Carb help
yea...no credit at all.
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03-26-2009, 12:16 AM
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#9 | ||
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AF Enthusiast
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Re: Carb help
Quote:
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03-26-2009, 01:36 AM
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#10 | |
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The President
Join Date: Nov 2003
Location: Willoughby, Ohio
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Re: Carb help
lol, it's ok, i forgive.
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