LG vs Kooks headers

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Feb 16, 2008 | 09:45 PM

#21

zrocket_99

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i say kooks all the way, that is what i run and love them.

Feb 17, 2008 | 04:25 PM

#22

Ragtop 99

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From: Bethesda, MD

Quote:

Originally Posted by YO-EL

My experience has been up to 3500 rpms most of these headers are the same..
From 3500-7000 rpms is where the KOOKS will out pull, giving almost a .1 quicker ET, which is huge...

You swapped and gained .1?

Feb 18, 2008 | 09:33 AM

#23

YO-EL

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From: Phila PA

Quote:

Originally Posted by Ragtop 99

You swapped and gained .1?

My actual ET gain was about .06..
On the dyno it was 8 RWHP & 8 TQ more from 3500 up to 7000 rpms.
KOOKS in RED
LG in Blue

Last edited by YO-EL; Feb 18, 2008 at 09:38 AM.

Feb 19, 2008 | 07:41 AM

#24

PA Z06

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From: Philadelphia

Quote:

Originally Posted by Sigforty

You are going to hear all different opinions from all kinds of different people on headers. I personally choose my LG pros for my 01 Z06 and have been happy with the quality and performance of the product. I think in the end you are splitting hairs trying to compare power outs of one header versus another. The kooks will probably work better on the top end for drag racing, and the LGs should have more low end and torque production for road racing or street use. I would suggest which ever one you choose go with 1 7/8 inch primaries for the Ls7 though.

I agree, but I dealt with LG over a customer service issue and they rocked

Feb 19, 2008 | 08:30 AM

#25

blown4.6

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From: Richardson, TX

Quote:

Originally Posted by YO-EL

My actual ET gain was about .06..
On the dyno it was 8 RWHP & 8 TQ more from 3500 up to 7000 rpms.
KOOKS in RED
LG in Blue

Were these pulls done on the same day?

Feb 19, 2008 | 09:26 AM

#26

Louis

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From: Frisco/Wylie

Show the whole graph, and run details, as well as when they were made

Feb 19, 2008 | 10:37 AM

#27

YO-EL

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From: Phila PA

Quote:

Originally Posted by Louis

Show the whole graph, and run details, as well as when they were made

No problem...
Here it is...
The BLUE LG pull was done in the morning, and the RED KOOKS pull was done about 4 hrs later after removal of the LG's & install of the KOOKS...

On subsequent runs compared to the last 3 yrs w/ the LG's, in comparable DA, I DID pick up .05-.07 ET with the KOOKS headers, with NO other changes.
None of the new KOOKS runs were EVER any slower than ANY of my LG runs.
They were always .05 or quicker ET..

Feb 19, 2008 | 03:19 PM

#28

07 Z06

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Thanks for everyone's input. After talking to both companies about my application and looking at the dyno results I will go with Kooks. Both headers seem to perform well, but I think Kooks will work better for me.