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.

dead spot

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Old Jun 22, 2002 | 07:07 AM
  #1  
Riley's35089rs+'s Avatar
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Joined: Nov 2001
Posts: 2,743
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From: heartland
Car: 89rs (previous 2.8)
Engine: 406
Transmission: 700r4 (for now)
dead spot

Edelbrock 600cfi, performer intake. Just off ldle when cruising, I get a bad miss, a little throttle and it i gone . just seems to be one spot. My FP is set at 6lbs. The car has always ran a little rich, so what ya think?
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Old Jun 22, 2002 | 01:41 PM
  #2  
86_iroc-z28-350's Avatar
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Joined: Jun 2002
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my car has the same prob except i have a edelbrock 750 cfm, it is jetted down and has a dead spot off idle and floods realy bad
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Old Jun 22, 2002 | 08:40 PM
  #3  
F-BIRD'88's Avatar
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Joined: Sep 2001
Posts: 6,111
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Try a primary metering rod that has a slightly smaller
cruise step ( about .002/.004") and the same size power step
as what you have in there now. This will enrichen the cruise
calibration slightly while leaving the full throttle calibration alone.

You can buy a edelbrock performer tuning kit specific to your carb.
It has a selection of relevent parts to fine tune your carb.

You can see a list of the different metering rods and
their specs online at www.edelbrock.com
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Old Jun 23, 2002 | 07:02 AM
  #4  
Riley's35089rs+'s Avatar
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Supreme Member
 
Joined: Nov 2001
Posts: 2,743
Likes: 1
From: heartland
Car: 89rs (previous 2.8)
Engine: 406
Transmission: 700r4 (for now)
Thanks for the reply....I'll check it out.
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