pics comparing stock manifolds

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Apr 2, 2002 | 03:11 PM

ktm520

Thread Starter

Staging Lane

Joined: Jan 2002

Posts: 99

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From: newburgh, in

pics comparing stock manifolds

i saw some pics either here or on ls1.com comparing stock pre '00 and '00+ exhaust manifolds. does anybody know where these are located?

thanks

Apr 2, 2002 | 03:19 PM

WILWAXU

TECH Senior Member

iTrader: (6)

Joined: Nov 2001

Posts: 14,378

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From: League City, TX

Re: pics comparing stock manifolds

hmm.. I know that GM literature said they were different.. but I didn't see any differences.

What's the difference suppose to be?

Apr 2, 2002 | 06:08 PM

monSSter1191

TECH Apprentice

Joined: Nov 2001

Posts: 356

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From: Tucson, AZ

Re: pics comparing stock manifolds

I don't know of any differences other than obviously the flanges for the AIR and EGR are in slightly different locations - god only knows why.

Then obviously the 2001's don't have the EGR flange on the manifold.

Apr 3, 2002 | 08:01 PM

gm_jim

Staging Lane

Joined: Nov 2001

Posts: 56

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From: San Carlos, CA

Re: pics comparing stock manifolds

98-99 manifolds = double walled steel, more retrictive
00 & up manifolds = cast iron, less restrictive

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