I put a holley model # 3310 carb with #70 jets on my 350, and off idle(700-750 rpm) it laggs then will pick up with more gas, and from full stop without my foot on the gas it dies, what will make it do this. thanks,

chris

 

Could you please give a little more info please? Do you mean it dies from off idle stops or dies when you stop? Auto or manual tranny? Is the exhaust black/smell like gas?


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1984 WS6 Trans Am Hartop
Former L69 Car under restoration
1984 WS6 Trans Am T-top car
4-bolt main 350, headers, Holley 650, T-5 and 3.23's.
Daily driver and restoration

 

Sounds like a lean bog. Try changing the pump cam to give it a bigger shot of fuel or change the squiter. You probably have a #25. Go to a #31 and see if the bog goes away.

As for dieing at a full stop it could be a bunch of things. Most likely the idle speed and mixture is too low. It could also be an incorrectly adjust float level.

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Stephen's racing page

87 IROC-Z Pro ET Bracket Race Car and knocking on the SuperPro ET class
383 stroker (carbed) with double hump cast iron heads and pump gas
LS6 Big Block buildup now in progress

Best results before the engine blew up
Best ET on a time slip: 11.857
Best corrected ET: 11.163
Best MPH on a time slip: 117.87
Best corrected MPH: 126.10
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!

Member of the Calgary Drag Racing Association