HOLLEY help - Team Camaro Tech
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post #1 of 4 (permalink) Old Mar 6th, 10, 06:56 AM Thread Starter
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jeff
 
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Question HOLLEY help

holley 950cfm 4150 on a 406sbc question.
Idle is fluctuating about 200-300 rpm's at idle and the seems to be a flat spot just off idle when i step on the gas.

Info on engine: Distributor is locked out. solid roller cam. holley blue pump 6psi @ carb. Also hear a whistle sound at full throttle.

Thanks jeff

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post #2 of 4 (permalink) Old Mar 6th, 10, 07:29 AM
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Harry
 
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Re: HOLLEY help

holley base gasket is leaking = vacum leak
off idle stumble is caused by play in accelerator pump ( adjust so there is no play and any slight movement of the throttle will cause fuel to squirt out of shooters.
I had same issue last year and after adjusting this fixed it.
I also opted for the bigger REO accelerator pump kit .


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post #3 of 4 (permalink) Old Mar 8th, 10, 09:30 AM
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Re: HOLLEY help

Gee once again I spend the time to help out a fellow member and one would think he would reply?


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post #4 of 4 (permalink) Old Mar 14th, 10, 03:19 PM Thread Starter
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Re: HOLLEY help

Quote:
Originally Posted by dawg View Post
Gee once again I spend the time to help out a fellow member and one would think he would reply?
Sorry I didn't reply back in a timely manner. I was kinda busy. You know, with a thing called LIFE.
Anyways. Update on carb issue: Had some garbage in one of the idle mixture circuits. That fixed the surging problem. Readjusted acc. pumps.
Took car to track. Ran like a champ. Made a good pass then lined up for 2nd pass, released trans brake and POW!! bent drive shaft and sheared u-joint bolts off at pinion yoke.
Time for an aliminum shaft with 1350 joints

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