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

Apr 3, 2003 | 07:37 PM

#1

Thread Starter

Junior Member

Joined: Jun 2002

Posts: 88

Likes: 0

From: Michigan

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

Old

Apr 3, 2003 | 09:29 PM

#2

Supreme Member

Joined: Sep 1999

Posts: 7,072

Likes: 13

From: Philly, PA

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.

Old

Apr 3, 2003 | 09:31 PM

#3

Thread Starter

Junior Member

Joined: Jun 2002

Posts: 88

Likes: 0

From: Michigan

Car: 88 gmc 1500

Engine: 496

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

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