LS6 Intake Swap Compatibility
Thread Starter
Drifting
Joined: Mar 2000
Posts: 1,956
Likes: 135
From: Maryland
LS6 Intake Swap Compatibility
Hi everyone,
Quick question: Is there any difference in the LS6 intake from a 2002 Camaro and one that will work on my 2000 C5?
I think it will work but thought I'd check.
I know about the interference with the ribs under the intake.
Thanks!
Rob
Quick question: Is there any difference in the LS6 intake from a 2002 Camaro and one that will work on my 2000 C5?
I think it will work but thought I'd check.
I know about the interference with the ribs under the intake.
Thanks!
Rob
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
I would suggest a new gasket kit. Autozone sells one for $20. It has the 8 runner seals and new foam pads for underneath.
Grind the bottom completely flat and keep the coolant crossover pipe. This way worked perfectly fine for me and is the cheapest route.
Grind the bottom completely flat and keep the coolant crossover pipe. This way worked perfectly fine for me and is the cheapest route.
Thread Starter
Drifting
Joined: Mar 2000
Posts: 1,956
Likes: 135
From: Maryland
Yup, new gaskets / pads, will get a new one for the t.body as well. Was only going to clean off the ribs that hit the pipes. Saw a video of the chisel method but will probably try score / snap then file or belt sand.
Also saw a thread that recommended sealing the knock sensor seals with gasket sealer.
Was going to do the PCV update but think I'll stay with my air compressor filter / catch can.
Also saw a thread that recommended sealing the knock sensor seals with gasket sealer.
Was going to do the PCV update but think I'll stay with my air compressor filter / catch can.
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
If it has a EGR fitting/hole, it has to be plugged.
Tip: use white shoe polish or some white paint on the water tube and lay the manifold on top. Dremel the witness marks accordingly.
Tip: use white shoe polish or some white paint on the water tube and lay the manifold on top. Dremel the witness marks accordingly.
Thread Starter
Drifting
Joined: Mar 2000
Posts: 1,956
Likes: 135
From: Maryland
Where would the EGR hole be located? I'll have the current owner take a photo.
Shoe polish, got it!
Thanks
Shoe polish, got it!
Thanks
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
Ask the seller what it came off of. It should not have one if it is an LS6 intake. Only F-body's had EGR and that was when they had LS1 intakes. They lost EGR after they switched to LS6 style intake. So the only LS6 intakes that have EGR have been modified that way. So look for it, but it will most likely not be there. And if it has it, make darn sure it has a flat bottom and really is an LS6 intake.
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Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
If it's there, you'll see it easy enough. Right behind where the TB mounts. If it really is from an '02 F-Body, it shouldn't have one, at least not from the factory.
If you use the white shoe polish, you may have to act quickly as it tends to dry pretty fast. That's why I also mentioned paint; gives you more working time and if you use a water based latex it's an easier clean-up than oil based. Soap and water. Lots of people have some spare interior-trim paint around the house.
If you use the white shoe polish, you may have to act quickly as it tends to dry pretty fast. That's why I also mentioned paint; gives you more working time and if you use a water based latex it's an easier clean-up than oil based. Soap and water. Lots of people have some spare interior-trim paint around the house.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I just did this swap for a friend. Heres what we did. The crossover pipe will fit under the manifold. I used a high speed grinder to buzz off the ribs where the cross over pipe runs under the intake. We changed heads so I took off the complete cross over pipe, layed it on the bottom of the intake and marked what needed to be removed.
We also used a mallet and tapped the cross over pipe down so it lays below the valve valley cover bolts. We had absoluty ZERO fitment issues using the crossover pipe.
YES, install new intake O rings
YES, Seal up the Knock sensor plugs.
Consider shanging your OIL PRESSURE SENSOR. They go bad a LOT!
02ZO6 Sensor:
We also used a mallet and tapped the cross over pipe down so it lays below the valve valley cover bolts. We had absoluty ZERO fitment issues using the crossover pipe.
YES, install new intake O rings
YES, Seal up the Knock sensor plugs.
Consider shanging your OIL PRESSURE SENSOR. They go bad a LOT!
02ZO6 Sensor:
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I went to Autozone and purchased a nylon line repair kit and used it to lengthen the vacuum line on the back of the manifold. The line is so short that it becomes a PAIN to get back on properly and remain in place while your reinstalling the intake.
If it pops off, you will loose control of your HVAC Damper doors. and AIR System outlet valve.
Consider doing that. It makes life a LOT EASIER!
If it pops off, you will loose control of your HVAC Damper doors. and AIR System outlet valve.
Consider doing that. It makes life a LOT EASIER!
Thread Starter
Drifting
Joined: Mar 2000
Posts: 1,956
Likes: 135
From: Maryland
Ok, thanks for the EGR info, I'll look at the photos but it shouldn't have it.
Thanks for the photos Bill! Thats what I was picturing for sealing the knock sensors. New OPS, and good idea to lengthen the vacuum line!
Thanks for the photos Bill! Thats what I was picturing for sealing the knock sensors. New OPS, and good idea to lengthen the vacuum line!
Thread Starter
Drifting
Joined: Mar 2000
Posts: 1,956
Likes: 135
From: Maryland
Ok, what if it came off a 2005 Cadillac (different intake than from the previous seller)? Doesn't appear to have EGR. Requested photo of bottom.
Thanks!
Thanks!
Last edited by Rx7Rob; Sep 19, 2012 at 09:02 AM.
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
Here are all LS6 cast numbers:
12561182
12573572
12561184
Thread Starter
Drifting
Joined: Mar 2000
Posts: 1,956
Likes: 135
From: Maryland
Finally made it home and took a look at the manifold. Looks good other than being full of packing peanuts. I'll hit it with the air compressor and shop vac.
One more question, should the vacuum fittings at the firewall side of the manifold be loose or glued in solid? I can wiggle it a little.
Thanks!
One more question, should the vacuum fittings at the firewall side of the manifold be loose or glued in solid? I can wiggle it a little.
Thanks!
Thread Starter
Drifting
Joined: Mar 2000
Posts: 1,956
Likes: 135
From: Maryland
Let me crack this old one open again.
I just got the old manifold off, removed the required ribs, and tapped down the crossover pipes. I marked the top of the pipes with grease pencil and am not getting any contact to the manifold.
BUT, I can rock the manifold (front to back) when its dropped on the motor (no gaskets and not bolted). If I put the original manifold back on, there isn't any rocking. The rocking point seems to be just fwd of the mid crossover pipe, so it not sitting on that.
I put a few bolts in and torqued to 20 in-lbs and it seems to be pulled down flush but its tough to tell. Is it possibly for a plastic manifold to be warped? Think its usable or should I trash it and try again?
Tomorrow I'm going to measure length of each bolt boss in the manifold to make sure they're all the same length.
Thanks!
I just got the old manifold off, removed the required ribs, and tapped down the crossover pipes. I marked the top of the pipes with grease pencil and am not getting any contact to the manifold.
BUT, I can rock the manifold (front to back) when its dropped on the motor (no gaskets and not bolted). If I put the original manifold back on, there isn't any rocking. The rocking point seems to be just fwd of the mid crossover pipe, so it not sitting on that.
I put a few bolts in and torqued to 20 in-lbs and it seems to be pulled down flush but its tough to tell. Is it possibly for a plastic manifold to be warped? Think its usable or should I trash it and try again?
Tomorrow I'm going to measure length of each bolt boss in the manifold to make sure they're all the same length.
Thanks!
Melting Slicks
Joined: Jun 2012
Posts: 3,163
Likes: 6
From: Oceanside California
I had some rocking with the FAST92 I recently installed. I did everything I could to flatten the valley parts. It torqued down fine with no leaks and increased power well on the dyno. It was a little scary torquing it down, but it turned out fine. I hope this helps a little...