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Some exhaust manifold measurments

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Old 01-02-2010, 05:40 PM
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Default Some exhaust manifold measurments

I have a few sets of manifolds laying around and figured some pictures and measurment would help someone out.

LS3 manifolds

I ran these on my Chevy II with a hacked up stock clip.

















Inverted for the turbo crowd





















GTO manifolds
















C5 manifolds














Top to botom LS3, GTO, C5


Last edited by joshluther; 01-06-2010 at 04:19 PM.
Old 01-02-2010, 05:45 PM
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great info ! thanx for posting !!
Old 01-02-2010, 06:01 PM
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I have more somewhere.
Old 01-02-2010, 06:06 PM
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Schoenfeld street stock 186LS1










Old 01-02-2010, 06:10 PM
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Add truck, f body, ls7, and cts-v manifolds and this would make a great sticky
Old 01-02-2010, 06:43 PM
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First production run of truck Pacesetters

I didn't take these the same but they may help


















AEM Brute force truck headers











The pacesetters and aem side by side

Old 01-03-2010, 01:58 PM
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Thanks for the pictures!
Old 01-03-2010, 02:21 PM
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Outstanding!! You just saved me a ton of work. I was just headed out to the shop to do this very thing on my set of GTO manifolds. I needed the pics and measurements so I could answer an inquiry from a guy about buying them. Now, all I have to do is e-mail him and tell him where to look, Thanks! With all the questions on this forum about exhaust manifolds and headers, they really should make a sticky out of this. Ron
Old 01-03-2010, 08:42 PM
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Hey Joshluther!

Please tell me those LS-3 manifolds will bolt up flipped, looks like they'd be great for a cheap twin turbo...
Old 01-06-2010, 04:15 PM
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Originally Posted by S10xGN
Hey Joshluther!

Please tell me those LS-3 manifolds will bolt up flipped, looks like they'd be great for a cheap twin turbo...
I add more pictures with them inverted. Cylinder #3 is close fabricated valve covers won't fit I didn't have any stock covers kicking around to try. If you turn them around with them still pointing down they block the motor mount.

Last edited by joshluther; 01-06-2010 at 04:22 PM.
Old 01-06-2010, 10:35 PM
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Nice! Thanks for taking the time to check it out. Maybe a slight angle-mill on the flanges or adding a set of 1/2" spacers would do it. Definitely has promise!
Old 02-03-2010, 11:47 AM
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any chance of getting a few more measurements on those pacesetters? like how far out to the side they go, and how far down towards the ground? i hate to drop 300 plus shipping to find out i can't even use them. thanks, nick
Old 02-03-2010, 12:37 PM
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Josh, a few questions on the C5 manifolds.

Did the C5 manifolds clear without touching the subframe?
Are they stainless and can they be welded on?
Did you try them on the car with the stock clip?

I am building a wagon with an LSx platform, and looked at these manifolds as an alternative to headers.......I don't want to cut the front end up, but am not opposed to notching a little, or cutting the collector flanges off and reclocking them....

T,
Old 02-09-2010, 05:36 AM
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Sorry guys I am in Fla. on vacation right now when I get home I can take some more measurments.
Old 02-09-2010, 06:17 AM
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those LS3 manifolds look great for doing a setup in a tight area. I know most 3rd gen guys go with the fbody mani's, but those look like they may give a bit more wiggle room for working on things
Old 02-09-2010, 08:01 AM
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LS3 manifolds would be super close to the K-member and rear A-arm mount for 3rd gens
Old 02-10-2010, 09:23 AM
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boo, ok. there goes that idea. don't have the spare funds to find out how close, so i guess i'll stick to the tried-and-true 4 gen fbody ones
Old 02-19-2010, 08:54 AM
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Originally Posted by TomM
Josh, a few questions on the C5 manifolds.

Did the C5 manifolds clear without touching the subframe?
Are they stainless and can they be welded on?
Did you try them on the car with the stock clip?

I am building a wagon with an LSx platform, and looked at these manifolds as an alternative to headers.......I don't want to cut the front end up, but am not opposed to notching a little, or cutting the collector flanges off and reclocking them....

T,
Tom with the manifolds bolted to the motor the overal width is 24.75 inches at it's widest point.
Old 02-19-2010, 12:06 PM
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Great, I'll measure this weekend. Got some ideas for the manifolds, thanks for checking for me, I'll let you know whether I want the ones you have or not....

T,
Old 08-05-2011, 10:34 AM
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Originally Posted by TomM
Great, I'll measure this weekend. Got some ideas for the manifolds, thanks for checking for me, I'll let you know whether I want the ones you have or not....

T,
FYI, LS6 Vette

Andy1
Attached Thumbnails Some exhaust manifold measurments-vette-headers1.jpg  


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