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Edelbrock Carb, what are these tin tabs?

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Old Mar 12, 2025 | 08:24 PM
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Tom 400 CFI's Avatar
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From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Edelbrock Carb, what are these tin tabs?

?? Never seen 'em on a carb, before.​​​​​​​





Last edited by Tom 400 CFI; Mar 12, 2025 at 08:37 PM.
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Old Mar 12, 2025 | 09:03 PM
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From: Franklin, KY near Beech Bend Raceway, Corvette Plant and Museum.
Car: 1992 Pontiac Firebird
Engine: 5.0L L03 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: Edelbrock Carb, what are these tin tabs?

Never seen them before. Is that carb a marine version?
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Old Mar 12, 2025 | 09:26 PM
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Tom 400 CFI's Avatar
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From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: Edelbrock Carb, what are these tin tabs?

Yep it is. It's from my brother's boat, and I took a pic of it b/c of those peculiar tabs back in the summer when I was doing that ENGINE SWAP THAT KICKED MY A$$. Finally got to posting about it, today.

I was wondering if they're there to
*Reduce CFM?
*Increase signal at the discharge nozzle?
*Look extra-cool-marine-like?

Whatever they "do"...they look like a cheapy-cheap band-aid for something.

Last edited by Tom 400 CFI; Mar 12, 2025 at 09:33 PM.
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Old Mar 12, 2025 | 10:17 PM
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From: Franklin, KY near Beech Bend Raceway, Corvette Plant and Museum.
Car: 1992 Pontiac Firebird
Engine: 5.0L L03 TBI
Transmission: 700R4
Axle/Gears: 2.73
Re: Edelbrock Carb, what are these tin tabs?

I don't know why but first thing popped into my head was this is a marine carb. I might have seen this decades ago and my mind clicked onto marine. I can't remember ever seeing this before.

@Fast355 probably would know.
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Old Mar 15, 2025 | 11:00 AM
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Edelbrock Carb, what are these tin tabs?

Originally Posted by Tom 400 CFI
Yep it is. It's from my brother's boat, and I took a pic of it b/c of those peculiar tabs back in the summer when I was doing that ENGINE SWAP THAT KICKED MY A$$. Finally got to posting about it, today.

I was wondering if they're there to
*Reduce CFM?
*Increase signal at the discharge nozzle?
*Look extra-cool-marine-like?

Whatever they "do"...they look like a cheapy-cheap band-aid for something.
Looks like an attempt to even out the air/fuel ratio. Cannot say I have seen that. I have seen some that used a thicker booster to close off the CFM and make the primaries more responsive on smaller engines like the 4.3L.
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Old Mar 15, 2025 | 11:16 AM
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Tom 400 CFI's Avatar
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From: Park City, UT
Car: '92 Corvette, '89 1/2-a-'Vette
Engine: LT1, L400
Transmission: ZF6, T5
Axle/Gears: 3.45, 3.31
Re: Edelbrock Carb, what are these tin tabs?

Well....it's still a mystery-bandaid.

Whatever it was for, it sure is chinzy/cheesy. I love how there is one, on one booster and two on the other. LOL.
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