Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Mac mid length question.

Thread Tools
 
Search this Thread
 
Old May 3, 2012 | 05:48 PM
  #1  
BrentRS1985's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 22
Likes: 0
From: STL
Default Mac mid length question.

I picked up a set of mac mid length headers in a trade. I was wondering if I can bolt these up to the stock y pipe, or do I need to purchase the matching y pipe? The car sits very low, so I probably wouldn't be able to run an aftermarket y pipe.

btw, the car is a 2002 z28, no performance mods done.

Thanks

I tried searching for this info, but I can't find anything between all the classified ads
Reply
Old May 3, 2012 | 06:02 PM
  #2  
thegroup's Avatar
On The Tree
iTrader: (1)
 
Joined: Jun 2008
Posts: 196
Likes: 0
From: Archie, MO
Default

ill start. wouldnt be worth the time and effort on the install. sell them, save ur pennys and get a set of LTs. NOT SLP!!!!!! they sit VERY low. have to see if any other member can give some input on what LTs sit tight on the car. sry for the bad info
Reply
Old May 3, 2012 | 06:05 PM
  #3  
BrentRS1985's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 22
Likes: 0
From: STL
Default

I'm not interested in buying different headers, this car is a 130,000 mile daily beater. The headers are sitting here, I'll put them on if they bolt to the stock y.
Reply
Old May 3, 2012 | 06:35 PM
  #4  
thegroup's Avatar
On The Tree
iTrader: (1)
 
Joined: Jun 2008
Posts: 196
Likes: 0
From: Archie, MO
Default

just from my understanding, mids are like shortys. really dont do much. but if ur that bored, knock urself out then. DK about bolting up tho
Reply
Old May 3, 2012 | 08:47 PM
  #5  
WS600461's Avatar
On The Tree
 
Joined: Aug 2010
Posts: 136
Likes: 0
From: vicksburg ms
Default

i have them and my wye pipe sits a little lower then stock but still has plenty of room but i do have the mac ory.
Reply
Old May 3, 2012 | 09:51 PM
  #6  
MYLSWON-ws6's Avatar
Staging Lane
 
Joined: Jul 2011
Posts: 96
Likes: 0
From: nc
Default

They will not bolt to the stock y-pipe without modification. They are longer than shortys. So they do require a mac y-pipe
Reply
Old May 4, 2012 | 11:47 AM
  #7  
BrentRS1985's Avatar
Thread Starter
Teching In
 
Joined: Mar 2006
Posts: 22
Likes: 0
From: STL
Default

Originally Posted by MYLSWON-ws6
They will not bolt to the stock y-pipe without modification. They are longer than shortys. So they do require a mac y-pipe
Thanks for the info!
Reply
Old May 4, 2012 | 04:34 PM
  #8  
chrysler kid's Avatar
TECH Addict
20 Year Member
Photogenic
Liked
Loved
iTrader: (14)
 
Joined: Feb 2005
Posts: 2,720
Likes: 6
From: Mckinney Plano Frisco
Default

People knock on the Mac mids but my 98 formula made 340 whp with just an slp lid and Mac mids
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-1

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-2

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-3

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-4

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-5

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-6

10 Camaros You Should Never Buy

 
story-7

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-8

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
story-9

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

 Verdad Gallardo
Old May 4, 2012 | 04:54 PM
  #9  
WS600461's Avatar
On The Tree
 
Joined: Aug 2010
Posts: 136
Likes: 0
From: vicksburg ms
Default

i like my mids aswell would only change them if i got a great deal on longtubes
Reply
Old May 4, 2012 | 06:52 PM
  #10  
ULTIMATEORANGESS's Avatar
TECH Senior Member
20 Year Member
iTrader: (4)
 
Joined: Mar 2003
Posts: 10,985
Likes: 23
From: eatontown,nj
Smile

i still say go with some LTs if youre going through the trouble of installing them.
Reply
Old May 4, 2012 | 07:41 PM
  #11  
Tally TransAm's Avatar
TECH Junkie
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (17)
 
Joined: Nov 2001
Posts: 3,406
Likes: 2
From: Tallahassee, Fl
Default

Macs are fine, LT's will make a little more midrange but upper rpms will be very similar. my car ran 11.4 @ 124 with macs, shitty heads, and a small cam before i went turbo
Reply
Old May 4, 2012 | 07:43 PM
  #12  
TheLS1Lover's Avatar
TECH Resident
 
Joined: Jan 2011
Posts: 934
Likes: 0
From: Tulsa
Default

You already have them, run em'. They will make good power still. But you need Macs Y-Pipe
Reply
Old May 5, 2012 | 09:19 AM
  #13  
AiDRocks's Avatar
TECH Enthusiast
15 Year Member
iTrader: (13)
 
Joined: Apr 2007
Posts: 641
Likes: 1
From: Bay Area, Ca.
Default

You would need Mac y-pipe or custom on built.

I like my mids!
Reply
Old May 5, 2012 | 10:21 AM
  #14  
03Sssnake's Avatar
TECH Resident
iTrader: (20)
 
Joined: Mar 2007
Posts: 1,000
Likes: 0
From: H-Town/Cypress
Default

Complete nonsense with regard to the mid-lengths not making power. I had them on my 99 formula and went from 315 RHWP to around 338 RWHP with Mac Mids, offroad mid-pipe. The 99 had a lid, borla catback, ASP pulley prior to macs going on.
Reply




All times are GMT -5. The time now is 12:47 AM.

story-0
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-1
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-2
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-3
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-4
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-5
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-6
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-7
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE
story-8
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE