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Reload this Page K&N stub stack

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

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Old 06-03-2007, 08:23 PM   #1
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Join Date: Jan 2005
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Car: 1985 z-28
Engine: 350ci
Transmission: 700-r4

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K&N stub stack
Just installed one on my holley 750VS. I have a summit standard drop base cleaner with a 4" k&n filter in it. The instructions say to have 1.5" clearance between top of stub stack and the filter lid. I have 1.5" - 1.75" in the center, but toward the sides of the stack its more like 1".

Anyone else run one of these with a drop base and do they have with and w/o results from the track?

Where can I find a drop base cleaner that only drops about 1"?
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Old 06-04-2007, 01:56 PM   #2
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: 86 LG4-> ZZ3(LS1)/mild 396
Transmission: TH700(T56)/TH400
Axle/Gears: 10-bolt 3.23(4.10)/8.2" 10-bolt4.11

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I don't have a stub stack, but came across similar issues with the Proform mainbody on the 396 with a factory air cleaner. Only had about a 1/2" of clearance. I added an air horn spacer to compensate.

The open element drop base air cleaners I've had were around 1-1/4".
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Old 06-04-2007, 11:00 PM   #3
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Car: 1985 z-28
Engine: 350ci
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Re: K&N stub stack
This drop base is 1-1/4". With those air horn (air cleaner) spacers, do you have to use two gaskets, one below and one above the spacer?

If so, this will help me out cause I want to space 3/4", but found a cheap 1/2" spacer.
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Old 06-05-2007, 12:43 AM   #4
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Join Date: Mar 2000
Location: Littleton, CO USA
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: 86 LG4-> ZZ3(LS1)/mild 396
Transmission: TH700(T56)/TH400
Axle/Gears: 10-bolt 3.23(4.10)/8.2" 10-bolt4.11

Classifieds Rating: (3)
Yes, one gasket below and one above the spacer.
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