Kooks Coated 1 7/8" install
Thread Starter
Intermediate
Joined: Apr 2011
Posts: 48
Likes: 0
From: Ewa Beach Hawaii
Kooks Coated 1 7/8" install
I will be purchasing 1 7/8" coated headers (3"X) and wanted to ask anyone that has installed them, if there are any fitment issues? I read one guy had some issue with the clearance on his C6Z. Is there an issue with this on the LS2? Is there any trimming, bending, folding, banging that will need to be done to get them to fit and not make contact with any part of the car?
Thanks,
Ryan
Thanks,
Ryan
Burning Brakes
Joined: Aug 2010
Posts: 1,222
Likes: 52
From: Honolulu Hawaii
you came back yet or still out?just installed mine a few weeks ago.piece of cake you can do it.pass. side motor mount needs to be lifted just a bit to clear from underneath.driver side slid right in.I have LGs 1 7/8s.tuned by BSM.
Burning Brakes
Joined: Aug 2010
Posts: 1,222
Likes: 52
From: Honolulu Hawaii
awesome I like it.tweaked some tables/parameters/shift firmness not a full tune though and got rid of the cel for the rear 02s.gotta throw it on the dyno sometime soon and see where Im at.some news when you get back.tonys z06 is blown eric got rid of his yellow one and picked up a blk. 06 c6 and also blown procharger p1sc.looks like Im the slowone right now.when you get back we have a total of 4 blk. c6 and 1 blk. z06.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
I had headers that needed trimming on my car but fit perfectly on my friends car when I demodded mine. Cars have slight variances, it doesnt mean the headers are a bad design. Its a tight fit.
The coating is a great option.
The coating is a great option.
Thread Starter
Intermediate
Joined: Apr 2011
Posts: 48
Likes: 0
From: Ewa Beach Hawaii
Spin, thanks for the info. Are you saying you had to trim the headers or the car? Coated headers seem to always look better after some miles are put on them, while the uncoated always get that dull finish. Thought about hitting the inside with Eastwoods new internal exhaust coating. Have you heard anything about it (good/bad)?
Rex, when did Tony decide to do the SC? Did he go headers as well? Where did Eric pick up his new car? It's not going to be as easy to spot him any more. You'll get yours done in no time. Or maybe... you could put the bottle to it.
Should take a 200 shot. 
Rex, when did Tony decide to do the SC? Did he go headers as well? Where did Eric pick up his new car? It's not going to be as easy to spot him any more. You'll get yours done in no time. Or maybe... you could put the bottle to it.
Should take a 200 shot.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Spin, thanks for the info. Are you saying you had to trim the headers or the car? Coated headers seem to always look better after some miles are put on them, while the uncoated always get that dull finish. Thought about hitting the inside with Eastwoods new internal exhaust coating. Have you heard anything about it (good/bad)?
Rex, when did Tony decide to do the SC? Did he go headers as well? Where did Eric pick up his new car? It's not going to be as easy to spot him any more. You'll get yours done in no time. Or maybe... you could put the bottle to it.Should take a 200 shot.
Rex, when did Tony decide to do the SC? Did he go headers as well? Where did Eric pick up his new car? It's not going to be as easy to spot him any more. You'll get yours done in no time. Or maybe... you could put the bottle to it.
Should take a 200 shot. The headers never need to be altered.
You're fine with the purchase.
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Le Mans Master
Joined: Aug 2007
Posts: 6,473
Likes: 297
From: Orange Park FL
I will be purchasing 1 7/8" coated headers (3"X) and wanted to ask anyone that has installed them, if there are any fitment issues? I read one guy had some issue with the clearance on his C6Z. Is there an issue with this on the LS2? Is there any trimming, bending, folding, banging that will need to be done to get them to fit and not make contact with any part of the car?
Thanks,
Ryan
Thanks,
Ryan
Sorry, just realized you are going with Kooks. They are also good headers.
Last edited by pit-man; Jul 23, 2012 at 02:46 PM.
Melting Slicks
Joined: Oct 2010
Posts: 2,220
Likes: 16
From: Sugarhill Ga
I didn't have any problem at all
I did mine on jackstands. Just get the car up about 18 inches. I've heard that on Z51 cars the oil cooler lines need to be moved. I have also heard that some have to bend or trim the lip of the body where the tubes wrap down, but I never had a problem & I run 1 7/8 Kooks long tubes on my car.
good luck
good luck
Burning Brakes
Joined: Aug 2010
Posts: 1,222
Likes: 52
From: Honolulu Hawaii
Spin, thanks for the info. Are you saying you had to trim the headers or the car? Coated headers seem to always look better after some miles are put on them, while the uncoated always get that dull finish. Thought about hitting the inside with Eastwoods new internal exhaust coating. Have you heard anything about it (good/bad)?
Rex, when did Tony decide to do the SC? Did he go headers as well? Where did Eric pick up his new car? It's not going to be as easy to spot him any more. You'll get yours done in no time. Or maybe... you could put the bottle to it.Should take a 200 shot.
Rex, when did Tony decide to do the SC? Did he go headers as well? Where did Eric pick up his new car? It's not going to be as easy to spot him any more. You'll get yours done in no time. Or maybe... you could put the bottle to it.
Should take a 200 shot. 
Thread Starter
Intermediate
Joined: Apr 2011
Posts: 48
Likes: 0
From: Ewa Beach Hawaii
SUB VETTE - Thanks for the info on AR's. I'll pass it along.
truckplay - Thanks. Mine is a Z51 car, hopefully there won't be a need for bending/trimming on the car. If there is, I'll keep it clean.
Rex - Sent you a PM.
truckplay - Thanks. Mine is a Z51 car, hopefully there won't be a need for bending/trimming on the car. If there is, I'll keep it clean.
Rex - Sent you a PM.
Former Vendor
Joined: Feb 2007
Posts: 2,572
Likes: 1
From: Austin Texas
LS2's they just slide in with no issues. That includes the LS3 too. The C6Z is different and the battery cables get in the way and the best thing to do is disconnect them. Otherwise, you have a change of cutting them with the header flange.
Drifting
Joined: Dec 2008
Posts: 1,767
Likes: 2
From: Melbourne, Arkansas
Cruise-In X Veteran
I will be purchasing 1 7/8" coated headers (3"X) and wanted to ask anyone that has installed them, if there are any fitment issues? I read one guy had some issue with the clearance on his C6Z. Is there an issue with this on the LS2? Is there any trimming, bending, folding, banging that will need to be done to get them to fit and not make contact with any part of the car?
Thanks,
Ryan
Thanks,
Ryan
I put Kooks 1 7/8" headers w/cats on my Z06 this past spring. I did it on jack stands (about 18" in the air) with no problems. Disconnect the battery before you start. The drivers side when up without problems, just be careful of the wires. On the passenger side I have to disconnect the main (large) battery cable from the starter. After that I was able to slide it up into place. If you have a dry sump oil system you will need to drain the oil and disconnect the oil lines from the oil pan.
I did not need the O2 extensions for the forward O2 sensors. Make sure all the wire and connectors are as far from the headers as possible. The rear O2 sensors run the cables above the tunnel plate or the cable connectors will melt!! Leave all the connections loose until everything is in place, muffler tips are lined up and then tighten everything down!!
The hardest part to me was taking the old exhaust out. I disconnected the stock exhaust after the cats and just removed the manifolds and cats as an assembly out through the bottom.
One more thing, use the old exhaust manifold gaskets or get new GM gaskets. I did not care for the ones that they supplied with the headers.
Good luck and you will enjoy the sound!!
Mark
