LG vs Kooks headers
#24
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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.
#25
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#27
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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..
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..
#28
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.