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LS-6 Intake ports

Old 12-16-2013, 11:15 AM
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Default LS-6 Intake ports

Have a question about a LS-6 intake, I purchased a LS-6 intake from a member here and he stated it was a cathedral port, when I received it it looks like it has rectangle ports, the port openings are about 1" wide X 3-1/4" long and the top of the port is square as is the bottom, my heads are cathedral port, is this intake still considered a cathedral port? At this point don't know if I was taken or I'm confused, seller stated he took it off a cathedral port engine, any help would be appreciated as if he sold me the wrong intake $450 is a lot of change to loose.
Thanks
cbenn47
Old 12-16-2013, 11:24 AM
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post up pictures and we will be able to tell you what intake you got
Old 12-16-2013, 12:12 PM
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Not familiar with how to upload images to the forum, if someone would give me a number to send a picture and upload I would appreciate it.
Thanks in advance
cb
Old 12-16-2013, 12:15 PM
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What's the part number cast into the intake?
Old 12-16-2013, 12:17 PM
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Hopefully this can help:

http://teamzr1.com/ls6intake.html


http://www.digitalcorvettes.com/foru...d.php?t=165780
Old 12-16-2013, 12:19 PM
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That is the hard part of this, the person that had the intake prior to me did a modification to the intake, where the part number was is cut out to allow something to pass under the intake. Trying to do photo bucket but having a hard time, not a big computer person.
Old 12-16-2013, 12:35 PM
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ROCNDAV, thank you for the links, I do have a LS-6 intake by the pictures, the ports look the same as what I have, the question is will the intake fit on my 5.3? the heads on the motor are cathedral ports, can I use this intake on this motor? The reason I have questions is that the ports on the intake are different than what is on the heads or at least they look different.
Old 12-16-2013, 12:47 PM
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Old 12-16-2013, 01:03 PM
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Originally Posted by cbenn47
ROCNDAV, thank you for the links, I do have a LS-6 intake by the pictures, the ports look the same as what I have, the question is will the intake fit on my 5.3? the heads on the motor are cathedral ports, can I use this intake on this motor? The reason I have questions is that the ports on the intake are different than what is on the heads or at least they look different.
The LS6 intake will work with your 5.3.
Old 12-16-2013, 01:53 PM
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ROCNDAV
Thank you for your help and time, glad I got the right answer, wasn't sure if I had done my homework correctly.
Cb
Old 12-16-2013, 10:39 PM
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This is the LS6 intake thast I have will it work on the 5.3 cathederaal heads?
Old 12-17-2013, 04:30 AM
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Yes..
Old 12-17-2013, 07:22 AM
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I'm the guy he bought it from. He says that it is a rectangle port intake and not a cathedral port LS6. He says this will not work on his cathedral port 5.3 and wants his money back and to send the intake back. I keep trying to explain it to him that this will work on his 5.3 with no issues but he won't listen.

Last edited by 01SOMZ28; 12-17-2013 at 07:50 AM.
Old 12-17-2013, 07:25 AM
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He told me that he took the intake into a GM dealership to speak to the senior tech. The senior tech told him it won't work because it's an earlier LS6 intake and not cathedral port....It was removed from an '01 Z28.
Old 12-17-2013, 09:02 AM
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Its a ls6 intake will work100 percent.............. The senior tech you spoke to dont know jack **** obvisouly. There is no rectangle port ls6 intake. The intake was made from 2001 to 2004 for ls1-ls6 cathederal port engines.
Old 12-17-2013, 09:50 AM
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^^ And that's exactly what I said and keep telling him, yet he says I am wrong and didn't describe the intake correctly and wants his money back. He wanted a complete LS6 intake with tb/rails/injectors/sensors for his 5.3 and that is what he received.
Old 12-17-2013, 12:30 PM
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OP, if what 01SOMZ28 is saying is the truth then it looks like the problem is that you don't know what an LS6 intake is and neither does that senior tech at the dealership. An earlier LS6 intake and not for a cathedral port??? WTF... We're not talking about a 1970 carbureted big block LS-6 here. All genIII LS6 intakes are cathedral port intakes. The picture you posted is indeed a LS6 intake for cathedral port heads. The intake manifold ports themselves do not have cathedral shaped gaskets, but are for cathedral shaped heads. Don't worry dude, its a learning curve.

On a side note, I say that senior tech's advise on genIII/IV LS motors is very questionable.

Last edited by R6cowboy; 12-17-2013 at 12:36 PM.
Old 12-17-2013, 12:41 PM
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I think cbenn47 is experiencing some buyers remorse and wants to back out of the deal under false pretenses that he got the "wrong" intake.
Old 12-17-2013, 12:43 PM
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If you look at the first link that I shared, you can see both LS1 & LS6 intakes (with their rectangular ports) and the cathedral port LS1 heads in the picture below it.
Old 12-17-2013, 12:53 PM
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I know he doesn't know what an LS6 intake is. He told me he's a diesel guy and this is his first experience with these engines. He specifically asked me if it was cathedral port and I said yes. The same day upon receiving the intake he messages me saying "You told me it was cathedral port, this is rectangle port, this is useless to me and I will open a dispute if it's not taken care of." I talk to him on the phone the next day and explain everything to him that's being posted in this thread. He said he understood and to disregard his message that stated it was wrong. He's under the impression that the intake ports/gaskets are supposed to look the same as his truck intake which have cathedral shaped gaskets.

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