Quick question on exhaust manifolds.
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
Originally Posted by CNB
Are the 2000+ C5 manifolds the same as the 2001+ ZO6 manifolds? Thanks.
I was told over and over about how the 2001+ was different than the 1997-2000.
What I found was 2000 is an "odd" year. They changed the location of the A.I.R. tubes from 97-99, and different again from 2001-up.
I successfully bolted up a set of 2002 Z06 H-pipes to my stock 2000 manifold. So in that respect 2000 is the same as 2001+.
If you see a "deal" on some headers, and they are for a 2001-up, I'd go for it, and just adjust for the A.I.R. tube location issues. You can always buy the 2001+ A.I.R. tubes and retrofit your car, if necessary. They aren't that expensive at all.
Burning Brakes
Joined: Feb 2001
Posts: 936
Likes: 0
From: Reston VA
As Dan said, 2000 was an odd year. 97 - 99 and early 2K manifolds were stainless steel with round ports. The air tube connection on the passenger side is on the #7 port. It's not he best design in that all the tubes merge together in the center. They were also longer with a different collector bolt pattern than the later ones.
01 and up are cast iron, shorter and kind of tri-Y. They have "D" shaped ports. The air tube is between the # 5 and #3 ports. They are about 8-1q0 lbs heavier than the SS. Later 2K manifold shared some characteristics of both. You can use the later ones if you change the H pipe but then you will have PUPs. Probably more than you wanted to know but what the heck.. :-). - C.
01 and up are cast iron, shorter and kind of tri-Y. They have "D" shaped ports. The air tube is between the # 5 and #3 ports. They are about 8-1q0 lbs heavier than the SS. Later 2K manifold shared some characteristics of both. You can use the later ones if you change the H pipe but then you will have PUPs. Probably more than you wanted to know but what the heck.. :-). - C.
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
Originally Posted by Mr. C's 5
As Dan said, 2000 was an odd year. 97 - 99 and early 2K manifolds were stainless steel with round ports. The air tube connection on the passenger side is on the #7 port. It's not he best design in that all the tubes merge together in the center. They were also longer with a different collector bolt pattern than the later ones.
01 and up are cast iron, shorter and kind of tri-Y. They have "D" shaped ports. The air tube is between the # 5 and #3 ports. They are about 8-1q0 lbs heavier than the SS. Later 2K manifold shared some characteristics of both. You can use the later ones if you change the H pipe but then you will have PUPs. Probably more than you wanted to know but what the heck.. :-). - C.
01 and up are cast iron, shorter and kind of tri-Y. They have "D" shaped ports. The air tube is between the # 5 and #3 ports. They are about 8-1q0 lbs heavier than the SS. Later 2K manifold shared some characteristics of both. You can use the later ones if you change the H pipe but then you will have PUPs. Probably more than you wanted to know but what the heck.. :-). - C.
Thread Starter
Drifting
Joined: Jul 2004
Posts: 1,663
Likes: 16
From: DFW Texas
Do the 2001+ manifolds flow better? I remember reading about a member switching to longtubes from his ZO6 manifolds and only gaining a peak of approximately 5rwhp. I'm sure the longtubes had more area under the curve.
Last edited by CNB; Oct 18, 2004 at 07:24 PM.
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
Originally Posted by Mr. C's 5
Dan,
Not the early ones. I have two friends with 2000's and they have the same set up as my 99. - C.
Not the early ones. I have two friends with 2000's and they have the same set up as my 99. - C.
