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LS6 intake question

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Old Jan 23, 2010 | 04:03 PM
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Default LS6 intake question

How do you tell an LS6 intake apart from an LS1 intake ?

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Old Jan 23, 2010 | 04:15 PM
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LS1 intake has a rounded rib going down the length of the underside. The LS6 intake is flat on bottom.
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Old Jan 23, 2010 | 04:28 PM
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Default To find out without removal....

Look for the part number close to where the manifold meets the head.

Part numbers:

The 97-00 'Vette LS1 is 12556333.

The 2001-2004 Corvette LS6 is 12573572.

The 2001-2002 F-body LS6 (identical to 'Vette but diff part #) is 12561184.
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Old Jan 23, 2010 | 04:43 PM
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Originally Posted by ~Joshua
Look for the part number close to where the manifold meets the head.

Part numbers:

The 97-00 'Vette LS1 is 12556333.

The 2001-2004 Corvette LS6 is 12573572.

The 2001-2002 F-body LS6 (identical to 'Vette but diff part #) is 12561184.
Now that's what I was looking for !!

This is "on" my car now - 12556333

This is on my garage shelf - 12561184

Looks like I'll be swapping this "12561184" intake when I do my cam install.
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Old Jan 23, 2010 | 05:15 PM
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Good deal.

One thing to keep in mind is that the pre-'01 ls1 engine has a coolant line that runs from the back of the heads (T'd together) to the front where they are T'd from passenger to drivers side.

You will need to make a decision, here are your choices:

1) Swap the curerent coolant line for the '01+ set up (not expensive)

2) Leave your current line in place, and grind a little groove in the webbing on the underside of your LS6 (won't hurt the intake) so the intake can be bolted down.
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Old Jan 23, 2010 | 05:37 PM
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Originally Posted by ~Joshua
Good deal.

One thing to keep in mind is that the pre-'01 ls1 engine has a coolant line that runs from the back of the heads (T'd together) to the front where they are T'd from passenger to drivers side.

You will need to make a decision, here are your choices:

1) Swap the curerent coolant line for the '01+ set up (not expensive)

2) Leave your current line in place, and grind a little groove in the webbing on the underside of your LS6 (won't hurt the intake) so the intake can be bolted down.
And where can I get this 01+ coolant setup ?
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Old Jan 23, 2010 | 06:08 PM
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Several vendors on the forum sell them. You can also find them on fleabay pretty cheap.
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Old Jan 23, 2010 | 06:20 PM
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Keep in mind that 2001 + LS1's and LS6's have the same intake......
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Old Jan 23, 2010 | 06:31 PM
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Originally Posted by Sinister-one
And where can I get this 01+ coolant setup ?
For dirt cheap prices search the parts section. Lots of cars being parted out lately.

Also, you can post in that section that you want to buy. Shouldn't cost much.
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Old Jan 23, 2010 | 07:31 PM
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Posted in the parts section....
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Old Jan 23, 2010 | 07:41 PM
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Or from Gene @ GM Parts Direct...always great prices.
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Old Jan 23, 2010 | 08:09 PM
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Originally Posted by 2079
Or from Gene @ GM Parts Direct...always great prices.
Not until next week. Tomorrow's Sunday.
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Old Jan 23, 2010 | 08:20 PM
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Originally Posted by 2079
Or from Gene @ GM Parts Direct...always great prices.
Actually it is Gene at GMPartsHouse.com.

http://www.gmpartshouse.com/
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