LS6 intake quick question
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Burning Brakes
Joined: Nov 2013
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LS6 intake quick question
While piddling around on craigslist, I stumbled on a guy selling an intake manifold off a 2004 GTO for $150. Don't have time to do much research, going after work to pick it up. The 2004 GTO is an LS6 intake right?
Is the swap terribly difficult? I skimmed a guide a while back, and it looked like there was a little cutting and sawing involved, but it didn't look too terrible, but again, I just skimmed.
Is the swap terribly difficult? I skimmed a guide a while back, and it looked like there was a little cutting and sawing involved, but it didn't look too terrible, but again, I just skimmed.
Race Director
Joined: Sep 2005
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From: Pasco WA
No , that's a LS2 manifold. Not as good as a LS6, even with a 90mm TB. You 'll need the fuel rail, too. Also a converter to plug and play the new TB. Surprise. I hope you get the TB, too. Yours won't fit. OH yeah, injectors and a tune.
Last edited by zeevette; Dec 11, 2013 at 05:40 PM.
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Yes, the '04 Goat used the LS1 engines and the following year changed over to the LS2.
Note: After '01, all LS1 (and LS6 engines) car intakes were "LS6" intakes, and so there's really no such thing anymore, as such. The LS6 "name" remains only to distinguish the manifold design from the earlier ('97 - '00) LS1 engines.
When in doubt, look at the underside. It MUST be "flat". That design characteristic is why the "steam/water" lines had to be modified to eliminate it from running underneath the manifold. The "Z06" engines used two separate water plugs in the rear and a smaller water crossover line in the front to eliminate the water line running under the manifold
You CAN modify the underside of the manifold if you like, and that's probably where you read about the cutting/Dremeling needed, but that's only if you want to retain the OE LS1 style water line that runs under the manifold. It's not a hard job.
Like I said, I would be sure to check the manifold closely, as there are some people out there (I know this may come as a shock to many people
) that try to pass off LS1 manifolds as "LS6" manifolds.
Note: After '01, all LS1 (and LS6 engines) car intakes were "LS6" intakes, and so there's really no such thing anymore, as such. The LS6 "name" remains only to distinguish the manifold design from the earlier ('97 - '00) LS1 engines.
When in doubt, look at the underside. It MUST be "flat". That design characteristic is why the "steam/water" lines had to be modified to eliminate it from running underneath the manifold. The "Z06" engines used two separate water plugs in the rear and a smaller water crossover line in the front to eliminate the water line running under the manifold
You CAN modify the underside of the manifold if you like, and that's probably where you read about the cutting/Dremeling needed, but that's only if you want to retain the OE LS1 style water line that runs under the manifold. It's not a hard job.
Like I said, I would be sure to check the manifold closely, as there are some people out there (I know this may come as a shock to many people
) that try to pass off LS1 manifolds as "LS6" manifolds.
Last edited by LoneStarFRC; Dec 11, 2013 at 05:51 PM.
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
LS6 on the left, LS1 on the right:
In this picture, it appears as though some of the small ribs have been shaved, or trimmed off, to allow the use of the regular LS1 style water crossover lines.
In this picture, it appears as though some of the small ribs have been shaved, or trimmed off, to allow the use of the regular LS1 style water crossover lines.
Thread Starter
Burning Brakes
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I'm a bit unclear here. So it should be an LS6 intake then? The guy never used the term LS6 anywhere in the listing, so I wouldn't think he's trying to pass off a fake. I look for a PN and google it when I see it.
Team Owner
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
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Burning Brakes
Joined: Dec 2003
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From: Loveland CO
2001/02+ LS1's use the same intake as a LS6, as stated above if the bottom is flat on the manifold then its a LS6 style intake.. FYI some cars still had a EGR, the Corvette did not.. so if it has a EGR port it will need to be blocked.. best to find a 2001+ C5 LS1/LS6 intake manifold.
Might contact seller to ask for a pic of the underside of the intake just to verify, but being a 04 it should be the same design as the LS6 manifold.
There are a few "HOW TO's" on doing a intake swap from older to newer style intake.. search will find it.
S
Might contact seller to ask for a pic of the underside of the intake just to verify, but being a 04 it should be the same design as the LS6 manifold.
There are a few "HOW TO's" on doing a intake swap from older to newer style intake.. search will find it.
S
Last edited by RedZMonte; Dec 11, 2013 at 07:10 PM.
Thread Starter
Burning Brakes
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Thanks for the help, and for the lesson in semantics Lonestar. haha. Something came up, and I didn't see it last night. I talked to the guy a little more though, apparently the $150 price is just for the intake. Do I need the fuel rails and injectors, or can I swap those over?
Drifting
Joined: Feb 2008
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From: Bahama North Carolina
Thanks for the help, and for the lesson in semantics Lonestar. haha. Something came up, and I didn't see it last night. I talked to the guy a little more though, apparently the $150 price is just for the intake. Do I need the fuel rails and injectors, or can I swap those over?
Tech Contributor
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If you insure that the coolant lines are BELOW the top of the valve valley bolts,, the manifold will install without removing the steam vent lines.
We tapped the lines down with a wooden dowel and a mallet and the manifold fit like a champ. We did shave the areas on the bottom of the manifold just to ne sure but, in our case it really didnt need it.
Test fit the manifold and make sure that it lays flat on the head intake surfaces for proper fit.
Bill
We tapped the lines down with a wooden dowel and a mallet and the manifold fit like a champ. We did shave the areas on the bottom of the manifold just to ne sure but, in our case it really didnt need it.
Test fit the manifold and make sure that it lays flat on the head intake surfaces for proper fit.
Bill
Thread Starter
Burning Brakes
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Thanks for the help guys. I won't be touching it until spring, just want to make sure I'm not getting in over my head. haha. I've swapped a manifold before, but I've never worked with an LS1 or a Corvette, so you never know what might come up.
Team Owner
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Thanks for the help, and for the lesson in semantics Lonestar. haha. Something came up, and I didn't see it last night. I talked to the guy a little more though, apparently the $150 price is just for the intake. Do I need the fuel rails and injectors, or can I swap those over?
Your next step will be to decide if you want to keep your existing LS1 water ("steam") lines, or remove and install the Z06 style set-up. Easy to do either way, but you really need to do one or the other.
HTH
