LS1/LS6 intake gurus inside to clarify an issue please!!!!!
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Staging Lane
Joined: Jul 2004
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LS1/LS6 intake gurus inside to clarify an issue please!!!!! I had an LS6 intake on my car that I sold to a friend, well he brought his car into a local Oklahoma City f-body shop for his knock sensors to be replaced. They called him this evening and told him that the intake was for a 97-00 Corvette LS1. They told him that an LS6 intake would not fit on the car with LS1 coolant tubes, B.S. They also told him the intake had been modified to accept the cable linkage setup for an f-body instead of electronic throttle linkage. I have seen many LS1 intakes and many LS6 intakes and the underside of the plenum does not lie. The undersides are totally different, where as the LS6 is flat underneath, the LS1 intake is sunken,and wavey, which is less plenum volume. Does an 97-00 corvette LS1 intake have the same plenum volume as an LS6??? I doubt it!!! Please give me you alls imput guys b/c the intake was brand new, and I "know" it was an LS6. Damn I realize why Ok. LS1/LS6's are not on the map, the fastest car is an 396 LS1 with the gas that runs 11.0's NUFF said!!!!!!!! The picture below is an LS1 intake on the left, and an LS6 intake on the right.
Last edited by 1BADFNHuggerZ; Oct 14, 2004 at 11:56 AM.
I'm sure they're mistaken, if you've seen the bottom of the intake (which I will assume you have because it was off your car when you gave it to him 
) then I would think you know the truth.
The LS1 coolant lines will not fit under an LS6 without modifying either the bottom of the intake (the 'grid' area) or the tubes themselves.
I think what tends to confuse people is that the '97-'00 C5 LS1 intakes had no EGR provision in them just as the standard LS6 intakes didn't/don't.
) then I would think you know the truth.The LS1 coolant lines will not fit under an LS6 without modifying either the bottom of the intake (the 'grid' area) or the tubes themselves.
I think what tends to confuse people is that the '97-'00 C5 LS1 intakes had no EGR provision in them just as the standard LS6 intakes didn't/don't.
Originally Posted by 1BADFNHuggerZ
I know someone knows the answer to the corvette LS1 intake deal, is the plenum volume the same as an LS6????
Originally Posted by 1BADFNHuggerZ
Thanks, for the info LS1/LT1. Can you put unbolt the throttle linkage off of the vette and replace it with the cable linkage for the f-body??
Even if not, they can be added easily.
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it would have to be the casting #'s that he is wanting for that's the only #'s on the intake's. I went to a GM dealership to see what the part number is and they said they have to have the casting #'s and the one on the intake is invalid. doesnt make sense. Also had the GM techs there take a look at it and said that it was a LS1 Vette intake.they took a micrometer measure ' i think thats what they called it' to measure the space between the intake and the top of the engine since it was on the car and said it was a little over inch space, which they said should be less. so we walked over to a camaro that has a LS6 intake on it and it was less then a inch.
Also the LS6's measurements from the bottom of the intake to the top where the gaskets will seal are less then a inch and not a inch like the ls1's right and the LS6 have parrellel lines between each gasket to where the ls1s have X's????? This intake has the brass fittings inserted but they are not all the way in and flush as the aftermarket Ls6's are.
the arrows point to where iam talking abou the X's
Also the LS6's measurements from the bottom of the intake to the top where the gaskets will seal are less then a inch and not a inch like the ls1's right and the LS6 have parrellel lines between each gasket to where the ls1s have X's????? This intake has the brass fittings inserted but they are not all the way in and flush as the aftermarket Ls6's are.
the arrows point to where iam talking abou the X's
Last edited by Mstngkiller; Oct 13, 2004 at 11:29 PM.
Thread Starter
Staging Lane
Joined: Jul 2004
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Originally Posted by LS1LT1
Simple question: Was the bottom of the intake flat or 'wavey' before you put it on the car?
Last edited by 1BADFNHuggerZ; Oct 14, 2004 at 11:55 AM.
Thread Starter
Staging Lane
Joined: Jul 2004
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Originally Posted by 1BADFNHuggerZ
It's flat, I showed him both his intake bottom "wavey" , and the LS6 he bought from me "flat", when it was installed @ my house!!! I have offered to pull the intake off of his car to prove that there is a difference and it's flat underneath. I know there were no LS1 intakes with a flat bottom.
Let's just pull the f*cking intake off and get this over with once and for all. Also there is a reciept to prove the purchase and what intake it is. THE BOTTOM OF THE INTAKE WILL NOT LIE!!!!!!!!!!!!!!!!
Last edited by 1BADFNHuggerZ; Oct 14, 2004 at 01:03 AM.
Thread Starter
Staging Lane
Joined: Jul 2004
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Originally Posted by LS1LT1
Forget what the shop said, forget what the dealership said, it's an LS6 intake and that's final! 
TECH Apprentice
Joined: Oct 2003
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From: oklahoma city
Originally Posted by 1BADFNHuggerZ
I had an LS6 intake on my car that I sold to a friend, well he brought his car into a local Oklahoma City f-body shop for his knock sensors to be replaced. They called him this evening and told him that the intake was for a 97-00 Corvette LS1. They told him that an LS6 intake would not fit on the car with LS1 coolant tubes, B.S. They also told him the intake had been modified to accept the cable linkage setup for an f-body instead of electronic throttle linkage. I have seen many LS1 intakes and many LS6 intakes and the underside of the plenum does not lie. The undersides are totally different, where as the LS6 is flat underneath, the LS1 intake is sunken,and wavey, which is less plenum volume. Does an 97-00 corvette LS1 intake have the same plenum volume as an LS6??? I doubt it!!! Please give me you alls imput guys b/c the intake was brand new, and I "know" it was an LS6. Damn I realize why Ok. LS1/LS6's are not on the map, the fastest car is an 396 LS1 with the gas that runs 11.0's NUFF said!!!!!!!! The picture below is an LS1 intake on the left, and an LS6 intake on the right.
Thread Starter
Staging Lane
Joined: Jul 2004
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Originally Posted by hink9
could you maybe post a bigger pic, theres no way of telling in that picture, who took that picture was it the other shop or you?
Teching In
Joined: Oct 2004
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From: oklahoma
Part # Ok I have worked at GM dealers for 14 years here is how it works. The part no 12556333 is the old part number for the LS1 intake used on the Vette fron 97-00 it changed numbers in 00 to a 12557846 then in 01 to a 88894095. It is NOT an LS6 intake sorry. Everyone thinks that is a casting number it is not if you have dealer contack GM partech they will confirm this is old part number for LS1.
Originally Posted by DAYWALKER_
Ok I have worked at GM dealers for 14 years here is how it works. The part no 12556333 is the old part number for the LS1 intake used on the Vette fron 97-00 it changed numbers in 00 to a 12557846 then in 01 to a 88894095. It is NOT an LS6 intake sorry. Everyone thinks that is a casting number it is not if you have dealer contack GM partech they will confirm this is old part number for LS1.
thats exactly the part number that is on it. i figured when i had more then 7 people telling me that it was a ls1 vs one person telling me it was a ls6.
Last edited by Mstngkiller; Oct 14, 2004 at 06:07 PM.
Teching In
Joined: Oct 2004
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Originally Posted by 1BADFNHuggerZ
I had an LS6 intake on my car that I sold to a friend, well he brought his car into a local Oklahoma City f-body shop for his knock sensors to be replaced. They called him this evening and told him that the intake was for a 97-00 Corvette LS1. They told him that an LS6 intake would not fit on the car with LS1 coolant tubes, B.S. They also told him the intake had been modified to accept the cable linkage setup for an f-body instead of electronic throttle linkage. I have seen many LS1 intakes and many LS6 intakes and the underside of the plenum does not lie. The undersides are totally different, where as the LS6 is flat underneath, the LS1 intake is sunken,and wavey, which is less plenum volume. Does an 97-00 corvette LS1 intake have the same plenum volume as an LS6??? I doubt it!!! Please give me you alls imput guys b/c the intake was brand new, and I "know" it was an LS6. Damn I realize why Ok. LS1/LS6's are not on the map, the fastest car is an 396 LS1 with the gas that runs 11.0's NUFF said!!!!!!!! The picture below is an LS1 intake on the left, and an LS6 intake on the right.
We did not come on here to bash anybody. But our credability is being damaged. We do not appreciate it.