C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Quarter mile trouble

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Old Sep 9, 2003 | 09:53 PM
  #1  
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Default Quarter mile trouble

Went to the track on the weekend and couldnt get the car into the 12's
I would think with my mods it would be a 12's car. Is my exhaust holding back this car with only a cat back installed?Do you guy's feel even if I upgraded to 2 1/2 inch& high flow Y-pipes make a difference or is my problem else where

Best ET 13.2 @ 103 with Drag radials
60 ft 1.9
.579 R/T
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Old Sep 9, 2003 | 09:59 PM
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Default

Dear lord man, headers!!!!!!!!!!!!! Open that beast up!!!!!
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Old Sep 9, 2003 | 10:06 PM
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Default Re: (scorp508)

scorps just have a little problem Im running edelbrock performer heads with
straight plugs and Im having a problem in finding a set of long tubes to clear the plugs
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Old Sep 9, 2003 | 10:09 PM
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Default Re: (91superram)

Ahhhh yes that make things a little tougher. Have you considered the Accel shorty plugs? I wonder if those would give the clearence you need.
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Old Sep 9, 2003 | 10:12 PM
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Default Re: (scorp508)

It is a more expensive way, but getting custom headers made is a possibility. Not sure about where you are, but most areas have custom exhaust shops that can make performance headers. I bet that there are headers out there though for your heads. I don't think they are that un-common.
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Old Sep 9, 2003 | 10:12 PM
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Default Re: (91superram)

scorps just have a little problem Im running edelbrock performer heads with
straight plugs and Im having a problem in finding a set of long tubes to clear the plugs
Tpis will fit. I have a buddy here with the same heads straights no problems.
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Old Sep 9, 2003 | 10:13 PM
  #7  
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Default Re: (Corvette0096)

Thanks
Do you know what plugs he's using
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Old Sep 9, 2003 | 10:20 PM
  #8  
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Default Re: (91superram)

I'm using LPE 1 5/8" Longtubes with my stokc heads (straight plugs) No clearance issues..
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Old Sep 9, 2003 | 10:26 PM
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Default Re: (91superram)

Thanks
Do you know what plugs he's using
He said standard but you have to bang in the primary on the #7.. Get the LPE.
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Old Sep 9, 2003 | 10:39 PM
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Default Headers

Headers will greatly improve how that car breathes.

Wait'll you take the factory manifolds off and see what puny openings they have :U
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Old Sep 9, 2003 | 10:53 PM
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Default Re: Quarter mile trouble (91superram)

Or you can work on your 60' time. I'm guessing if you could knock a few 1/10's of your short time you may be able to squeak a 12 second pass in there. Headers would help for sure!

km
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Old Sep 9, 2003 | 11:49 PM
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Default Re: Quarter mile trouble (91superram)

scorps just have a little problem Im running edelbrock performer heads with
straight plugs and Im having a problem in finding a set of long tubes to clear the plugs
I am using Hooker 2149's longtubes with 1-3/4 primaries. I had no clearance issues with straight plug heads.
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