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Old 11-06-2013, 07:27 PM   #1
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Z/28 parts on ZL1

Walking around the GM booth at SEMA had me thinking...

I wonder how much improvement in HP the 2.75" Z28 exhaust is over the stock ZL1 version (I think it's 2.5" tubes).

What would have to be done to adapt the Z28 intake onto the ZL1?
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Old 11-06-2013, 07:43 PM   #2
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Mid pipes? I doubt much. Most after market catbacks are 3" and a catback isn't much in the way of performance gains.
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Old 11-06-2013, 11:18 PM   #3
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I was wondering the same thing since my dealer service rep showed me yesterday, while they had the car on the rack for oil change, that I have a leaky welds on my mid pipes on the exhaust system.
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Old 11-07-2013, 10:39 AM   #4
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I am really interested in the Z/28 intake and potentially the rotors.

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Old 11-07-2013, 12:42 PM   #5
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Mid pipes? I doubt much. Most after market catbacks are 3" and a catback isn't much in the way of performance gains.
Z/28 has an option for a 3" catback system from the factory. It's on the bottom right hand corner of the Z/28 performance accessories stand at the GM booth
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Old 11-07-2013, 06:03 PM   #6
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Why bother with the intake when we have a proven product in the name of Rotofab?

What am I missing?
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Old 11-07-2013, 06:57 PM   #7
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Will the rear spoiler on the Z28 fit on the ZL1?
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Old 11-07-2013, 07:00 PM   #8
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Will the rear spoiler on the Z28 fit on the ZL1?
It will fit a 2014 ZL1, it won't fit any of the earlier trunk lids.
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Old 11-07-2013, 07:56 PM   #9
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It will fit a 2014 ZL1, it won't fit any of the earlier trunk lids.
That thing is made of some kind a plastic or other easy to trim material , so I think that it can be easily modified to fit
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Old 11-07-2013, 07:59 PM   #10
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Quote:
Originally Posted by URBAN LEGEND View Post
Why bother with the intake when we have a proven product in the name of Rotofab?

What am I missing?
+1 and why bother with the exhaust when you can get a better after market 3" catback for cheaper then the GM z/28 one
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Old 11-07-2013, 08:40 PM   #11
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Quote:
Originally Posted by URBAN LEGEND View Post
Why bother with the intake when we have a proven product in the name of Rotofab?

What am I missing?
I guess it's just something about having one with a GM part number. I guess I'm picky that way.
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Old 11-07-2013, 10:11 PM   #12
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Nom nom nom...
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Old 11-07-2013, 10:27 PM   #13
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Quote:
Originally Posted by URBAN LEGEND View Post
Why bother with the intake when we have a proven product in the name of Rotofab?

What am I missing?
It's just an option for us few who first would like to bring the driver up to par (driver mod) with the cars capabilities first while maybe keeping the warranty a little longer before diving into mods that improve the cars performance at the cost of said warranty.

Besides, we all have been asking for factory performance parts and stage kits for a while now that increase performance with a GM warranty if at all possible. They must have a good cost to performance ratio though.
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Old 11-08-2013, 12:56 AM   #14
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I was under the belief that the "performance parts" from GM are actually manufactured thru the aftermarket companies? If you add the GM part or the other make aftermarket part it's still an add on part. I have yet to read a post stating that by adding aftermarket parts to their ZL1 the warranty was voided when they went in for service.
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Old 11-08-2013, 03:00 AM   #15
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Only if it is proven to have caused a failure with the warranted part as installed by the factory or dealer installed factory authorized and warranted part. You do not automatically lose your warranty though on the entire car even if it's proven to be true, only the system it directly affects.
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Old 11-08-2013, 03:02 AM   #16
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If it's a dealer installed factory authorized accessory part, it's covered on a warranty.
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Old 11-08-2013, 06:43 AM   #17
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After more thought, I have come up with a few reasons why the Z28 intake may NOT fit the ZL1.

1. Different hood profiles. All Non-ZL1 vehicles have the updated front ends, with the lower front hood profiles. This would make the "taller" profile of the ZL1 not quite compatible with the intake shield (it may not come up high enough).

2. Throttle body elbow location. The ZL1 throttle body exits the charger on an angle, whereas the LS3/LS7 have throttle bodys that exit the manifold perfectly straight.

After looking at the various intakes for the ZL1 at SEMA, I may have to build my own. I know others will just say "Get Roto-Fab or Cold Air Inductions" intake, but I'd rather have the OEM look of molded plastic. I have roto molding contacts, so it may not be too difficult for me to do.
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Old 11-08-2013, 09:08 AM   #18
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Quote:
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Nom nom nom...
i mean its nice and all and 100% better then a stock SS or ZL1 intake but im sure its going to be around 400-500 dollar range and for that money id rather have my cold air inductions or a carbon fiber roto fab (those go for 550 mine was 400 flat)
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Old 11-08-2013, 12:50 PM   #19
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I wonder what the price tag will be for the 3" Z28 exhaust.
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Old 11-08-2013, 03:29 PM   #20
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I wonder what the price tag will be for the 3" Z28 exhaust.
Same here.
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Old 11-08-2013, 11:29 PM   #21
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I also would be in for a Z28 intake, but looks like there's no way it would fit. The headers are tri-y, any thoughts on fitting up to stock ZL1 components?
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Old 11-09-2013, 06:52 AM   #22
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I also would be in for a Z28 intake, but looks like there's no way it would fit. The headers are tri-y, any thoughts on fitting up to stock ZL1 components?
I would venture a guess that they would fit...but if you're going through the trouble, why not long tube headers from Kooks, Stainless Works, etc?

Of course, other than cost (the GM ones are probably cheaper).
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Old 11-10-2013, 09:12 AM   #23
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I wonder what the price tag will be for the 3" Z28 exhaust.
The sign on the display says 3", but then says it has 2.75" clamps. When I measured a section of the exhaust on a display car (on its side), the tubing was 2.75" in diameter, not 3".

I wonder if there is a huge difference between the tri-Y exhaust manifolds and the stock LSA ones on the ZL1?
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Old 11-10-2013, 09:37 PM   #24
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I'm interested in the brakes.

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Old 11-13-2013, 03:47 PM   #25
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Quote:
Originally Posted by Bone Stock View Post
The sign on the display says 3", but then says it has 2.75" clamps. When I measured a section of the exhaust on a display car (on its side), the tubing was 2.75" in diameter, not 3".

I wonder if there is a huge difference between the tri-Y exhaust manifolds and the stock LSA ones on the ZL1?
I just looked at the 2013 sema magazine on chevy's web site and it says z28 2.75" performance exhaust. So Im guessing 3" was a typo or something

CONCEPT Z/28
PERFORMANCE PARTS
2.75" Z/28 EXHAUST
• Provides more than a 25% reduction in back pressure
(compared to an LS3-equipped Camaro)
• Reduces highway “drone” by continuing to incorporate the
active valve

http://www.chevrolet.com/content/dam...2013-final.pdf
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