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.

Filter and Pump

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Old Jan 17, 2007 | 03:26 PM
  #1  
90CamaroTBI's Avatar
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From: Waldorf, MD
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73
Filter and Pump

Just curious before I buy this other camaro with a l69 in it. What size K&N does the factory dual snorkel accept? And also I her that they come with electric fuel pumps, so why does it tick under the hood when you turn the key to the on position but dont fire it?
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Old Jan 17, 2007 | 04:05 PM
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five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Why a K&N? It's an expensive way to let dirt into your engine.

The ticking is the mixture control solenoid in the carb. It doesn't pump fuel, it cycles to open the jets to meter the amount of fuel that is allowed into the airstream. It should have both an in-tank electric pump (it makes a huming sound, not ticking) and an engine-mounted mechanical pump.
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Old Jan 17, 2007 | 05:36 PM
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90CamaroTBI's Avatar
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From: Waldorf, MD
Car: 91 Formula, 89 IROC
Engine: LB9, LB9
Transmission: 700R4, 700R4
Axle/Gears: Posi 2.73, Posi 2.73
what filter you recommend? I cant get any unless I can figure out a size.
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Old Jan 18, 2007 | 06:29 AM
  #4  
91greenbird's Avatar
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From: southern maryland
Car: 2012 Ram express
Engine: 5.7 hemi
Transmission: auto
Axle/Gears: 3.55
wasnt you who told me they didnt have electric pumps with carbs until 87?
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Old Jan 18, 2007 | 12:06 PM
  #5  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
LG4 didn't have electric pump with carb until '87. L69 apparently did all along (from what people tell me). And, some LG4's had a dealer-installed vapor lock mitigation kit installed, some reports say it included an in-tank pump, others say it didn't. My '86 donor car had such a kit, but it did not include the in-tank pump. The sticky about vapor lock bulletins does not indicate an in-tank pump was part of the kit.

For the air filter, just get a high quality one for the application (happens to be the same element for LG4 & L69). The stock filter is big enough to let in enough air, and the K&N lets in more small dirt than paper filters do.
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