Difference LS1-LS6 throttle body

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Jan 31, 2006 | 09:10 AM

frc

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Drifting

Joined: Feb 2005

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From: London KY

Difference LS1-LS6 throttle body

Is there a difference in a LS1 TB from a LS6 TB? Thanks

Jan 31, 2006 | 10:10 AM

byte_me

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Joined: Jun 2003

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From: Coconut Creek FL

Quote:

Originally Posted by frc

Is there a difference in a LS1 TB from a LS6 TB? Thanks

it is my understanding that all C5's use a 78MM TB - the MAF on an LS6 is larger thus is the subsequent rubber intake connectors on that portion of the air bridge.

The LS2 - is the 90MM unit - a lot of guys go with the FAST 90 intake and the 90MM TB as an induction upgrade (not for a stock motor though)

Jan 31, 2006 | 11:28 AM

fdxpilot

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Joined: Jul 2001

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From: Ocean Springs MS

Quote:

Originally Posted by byte_me

it is my understanding that all C5's use a 78MM TB - the MAF on an LS6 is larger thus is the subsequent rubber intake connectors on that portion of the air bridge.

On 01s and later, all C5s have the larger 85mm MAF and ducting. 02 and up Zs have the foam screen deleted and a PCM change to handle it. That's the only difference in MAFs and TBs. The Zs also have bigger air inlets on the airbox.

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