Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

power valve

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Old

04-03-2003, 07:37 PM

#1

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Car: 88 gmc 1500

Engine: 496

power valve

I have a 670 street avenger on my 350 the float is set at the right level but it runs rich. It has a the stock power valve in and i have about 12 inches of vacum should i switch the power valve or deos it need to be rejetted? I have a 350, vortech heads xe 268 cam, and a rpm air gap mainfold.
THANKS

fastredtruck is offline

Old

04-03-2003, 09:29 PM

#2

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How have your determined it is running rich? If the carb is working correctly the stock jetting is usually pretty close- well within the bounds of sanity, anyway.

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Old

04-03-2003, 09:31 PM

#3

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Car: 88 gmc 1500

Engine: 496

it smells like gas all the time, black smoke and my guage says its rich.

fastredtruck is offline

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