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09-30-2012, 06:40 AM
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#1 |
          
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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Kooks stepped header vs 1 7/8 all the way
I see two different part #s listed for our ZL1s in the Kooks catalog. There is a signature series stepped 1 3/4" to 1 7/8" header and a 1 7/8" all the way. On their comparison the stepped header produced more hp/tq(maybe on a N/A SS). Which do you think is a better choice? I haven't called Kooks to ask but would love to hear the opinions here. Or should I ditch the Kooks idea and go with American racing 1 7/8" or another brand?
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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09-30-2012, 04:25 PM
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#2 |
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Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,808
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89 views and no opinions?
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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09-30-2012, 04:33 PM
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#3 |
Drives: 11 Seconds or Faster Join Date: May 2012
Location: Arvada, Colorado
Posts: 2,797
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For FI, the bigger the primary the better. I don't have a ZL1, but I know the 2" is the way to go.
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I Ain't About That Stock Life.
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09-30-2012, 04:35 PM
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#4 |
Drives: 2000 Camaro SS Join Date: Feb 2010
Location: Louisville, Ky.
Posts: 25,179
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Stepped headers would need to be specific to the ZL1 and I do not think such an animal exists. I would recommend a set of 2 inch. I am partial to ARH and Stainless Works but Kooks is good stuff too.
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