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Old Sep 26, 2006 | 09:34 PM
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Default LS6 intake
I resently bought and installed a LS6 intake for my car and was looking to buy a ported and polished throttle body for it. What is the millimeter on a LS6 intake(78,80,90). I've looked in the stickies but didn't see anything(unless I missed it). Do you have any oppinions on want I should get(Nick Williams, Shaner etc..)
Thanks in advance
Buce
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Old Sep 26, 2006 | 09:51 PM
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I'm fairly certain I read somewhere that the LS6 intake manifold is able to run an 80mm throttle body. I have an MTI polished billet throttle-body and I'm happy with it. Good luck!
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Old Sep 26, 2006 | 10:02 PM
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it should be the same as the ls1 manifolds
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Old Sep 26, 2006 | 10:30 PM
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Isn't it 75.5mm?
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Old Sep 26, 2006 | 10:35 PM
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Originally Posted by zspot98
Isn't it 75.5mm?
I think it is.
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Old Sep 26, 2006 | 11:43 PM
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Originally Posted by zspot98
Isn't it 75.5mm?


Most just say 75mm.

Same as the LS1 manifolds. I would port my own if I was you. Thunder and New Era also do them.
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Old Sep 27, 2006 | 02:39 AM
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Originally Posted by TheBlurLS1


Most just say 75mm.

Same as the LS1 manifolds. I would port my own if I was you. Thunder and New Era also do them.
I agree.
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Old Sep 27, 2006 | 02:48 AM
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hmm i was pretty sure it was 78mm...what year car do you have?....if its a 00-02 ive got a ported and polished tb sittin around somewhere...i port them all the time
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Old Sep 27, 2006 | 06:44 AM
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Thank you for the replies. I've got an 00.
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Old Sep 27, 2006 | 07:16 AM
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Originally Posted by staringback05
hmm i was pretty sure it was 78mm...what year car do you have?....if its a 00-02 ive got a ported and polished tb sittin around somewhere...i port them all the time
I believe you are correct. Since you can use the stock throttle body on a 78mm FAST, it only makes since.

The stock MAF is a 75mm unit.
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Old Sep 27, 2006 | 01:16 PM
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with the 00 unit im pretty sure the cruise control/throttle unit cable will fit the 01-02 tb....i know the flange on the 98-99 tb is smaller.....any body got ideas on the 00?...if it does fit the 01-02...ive got a ported tb sittin here like i said....i can post pics later
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Old Sep 28, 2006 | 09:49 AM
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So the final thought is 75mm.? But an 80mm will fit?
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Old Sep 28, 2006 | 09:53 AM
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I thought the trucks are 78 mm and our cars have 75 mm.
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