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

Plz help! New Header does not fit- driver side only

Thread Tools
 
Search this Thread
 
Old Mar 4, 2024 | 10:18 AM
  #1  
ballenws4's Avatar
Thread Starter
Teching In
 
Joined: Sep 2014
Posts: 13
Likes: 2
From: Mesquite, TX
Default Plz help! New Header does not fit- driver side only

Has anyone had this issue? New set of headers- car is bone stock and low miles, trans and engine mounts are good. The collector is too high and cat will not fit there.. collector is 1" from bottom of the car. I also removed the heat shield there and still, not enough clearance.
other side fits great and will stay installed.
edit: i sure do appreciate all the feedback! I do believe I found the info I was seeking.





Last edited by ballenws4; Mar 6, 2024 at 01:18 PM.
Reply
Old Mar 4, 2024 | 10:52 AM
  #2  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,298
Likes: 3,619
From: Central Cal.
Default

Which brand of header?
Reply
Old Mar 4, 2024 | 11:41 AM
  #3  
98CayenneT/A's Avatar
TECH Junkie
10 Year Member
Photogenic
Liked
Loved
 
Joined: Nov 2013
Posts: 3,913
Likes: 366
From: White Bear, Mn
Default

Looks good to me.... looks like your aftermarket cats are the issue, not the header.
Reply
Old Mar 4, 2024 | 11:55 AM
  #4  
LS1Formulation's Avatar
12 Second Club
20 Year Member
Community Builder
Liked
Loved
iTrader: (14)
 
Joined: Apr 2006
Posts: 3,909
Likes: 1,158
From: Grand Rapids, Michigan
Default

Ditch the cats. They're not legal anyway.
Reply
Old Mar 4, 2024 | 11:33 PM
  #5  
sjsingle1's Avatar
TECH Senior Member
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (1)
 
Joined: Feb 2010
Posts: 6,761
Likes: 292
From: Fort Worth TX
Default

Had the same issue with my first set of TSPs.....had to BASH the crap outta the pipe after the header to get it to fit....not a pretty sight

now have KOOKS.....such a wonderful fit
Reply
Old Mar 5, 2024 | 09:57 AM
  #6  
99Silver6.0's Avatar
TECH Veteran
20 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: May 2002
Posts: 4,441
Likes: 93
From: Spring Hill, KS
Default

3 sets of TSP's did that exact thing on my car. Angle was upwards so much at the collector that nothing would slide together. They said my car was wrecked. I had to switch brands and oddly enough the new brand fit perfectly.



Last edited by 99Silver6.0; Mar 5, 2024 at 10:07 AM.
Reply
Old Mar 5, 2024 | 11:40 AM
  #7  
lees02WS6's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Mar 2004
Posts: 1,883
Likes: 282
From: Lansdale, PA
Default

Originally Posted by ballenws4
Has anyone had this issue? New set of headers- car is bone stock and low miles, trans and engine mounts are good. The collector is too high and cat will not fit there.. collector is 1" from bottom of the car. I also removed the heat shield there and still, not enough clearance.
other side fits great and will stay installed.
Have you shown the pics to whoever made the headers? Can you return them? You could also alter the angle slightly, but you'll need to cut it, mark it, and weld it, or have someone weld it for you - been there.
Reply
Old Mar 5, 2024 | 02:31 PM
  #8  
Tommy42088's Avatar
TECH Fanatic
Photogenic
Shutterbug
Liked
Loved
 
Joined: Oct 2022
Posts: 1,804
Likes: 641
From: Louisiana
Default

Are you planning to weld it or clamp it? I'd loosen the header bolts up enough to give it a little play and then either put the clamps on or weld it and then tighten the header bolts back up. I guess I'm a little different then some of you but I'd definitely make that work
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Mar 5, 2024 | 03:24 PM
  #9  
LS1 TJ's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Shutterbug
 
Joined: Sep 2008
Posts: 1,653
Likes: 530
Default

If you can't return I second the thought of a slight pie cut to pitch the collector down just a bit.
Reply
Old Mar 6, 2024 | 09:29 AM
  #10  
ballenws4's Avatar
Thread Starter
Teching In
 
Joined: Sep 2014
Posts: 13
Likes: 2
From: Mesquite, TX
Default

Originally Posted by lees02WS6
Have you shown the pics to whoever made the headers? Can you return them? You could also alter the angle slightly, but you'll need to cut it, mark it, and weld it, or have someone weld it for you - been there.
nah I haven't shown pics yet but they dod take the header back and will compare with one they have. Hopefully get sent back a good one!
Reply
Old Mar 6, 2024 | 09:32 AM
  #11  
ballenws4's Avatar
Thread Starter
Teching In
 
Joined: Sep 2014
Posts: 13
Likes: 2
From: Mesquite, TX
Default

Originally Posted by G Atsma
Which brand of header?
TX speed!
Reply
Old Mar 6, 2024 | 09:33 AM
  #12  
ballenws4's Avatar
Thread Starter
Teching In
 
Joined: Sep 2014
Posts: 13
Likes: 2
From: Mesquite, TX
Default

Originally Posted by sjsingle1
Had the same issue with my first set of TSPs.....had to BASH the crap outta the pipe after the header to get it to fit....not a pretty sight

now have KOOKS.....such a wonderful fit
yeah i think that will have to be my route, a diff brand
Reply
Old Mar 6, 2024 | 09:36 AM
  #13  
ballenws4's Avatar
Thread Starter
Teching In
 
Joined: Sep 2014
Posts: 13
Likes: 2
From: Mesquite, TX
Default

Originally Posted by 99Silver6.0
3 sets of TSP's did that exact thing on my car. Angle was upwards so much at the collector that nothing would slide together. They said my car was wrecked. I had to switch brands and oddly enough the new brand fit perfectly.

yeah the first csr told me it
must be my car. Which is a joke because the car is in mint condition and low miles. Now i'm seeing others had this issue, they should have been much more helpful >
the second csr yold me
to send it back and possibly can get me one that fits.
Reply
Old Mar 6, 2024 | 09:38 AM
  #14  
ballenws4's Avatar
Thread Starter
Teching In
 
Joined: Sep 2014
Posts: 13
Likes: 2
From: Mesquite, TX
Default

Originally Posted by 98CayenneT/A
Looks good to me.... looks like your aftermarket cats are the issue, not the header.
the cat fits, it's just hitting The pipe welded to the other side of the cat.
Reply
Old Mar 6, 2024 | 11:16 AM
  #15  
99Silver6.0's Avatar
TECH Veteran
20 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: May 2002
Posts: 4,441
Likes: 93
From: Spring Hill, KS
Default

Originally Posted by ballenws4
yeah the first csr told me it
must be my car. Which is a joke because the car is in mint condition and low miles. Now i'm seeing others had this issue, they should have been much more helpful >
the second csr yold me
to send it back and possibly can get me one that fits.
They did suggest I try new engine mounts which I did. Tried with new rubbers and Prothane poly's (which are still in now). Both types of new mount made it even worse!
Reply
Old Mar 6, 2024 | 04:49 PM
  #16  
Full Power's Avatar
TECH Fanatic
Photogenic
Liked
Loved
Community Favorite
 
Joined: Jul 2022
Posts: 1,042
Likes: 392
From: Alaska
Default

If you can't fix it with a HAMMER, then you'll need to make a cut and WELD it.
Reply
Old Mar 6, 2024 | 04:58 PM
  #17  
Tommy42088's Avatar
TECH Fanatic
Photogenic
Shutterbug
Liked
Loved
 
Joined: Oct 2022
Posts: 1,804
Likes: 641
From: Louisiana
Default

Originally Posted by Full Power
If you can't fix it with a HAMMER, then you'll need to make a cut and WELD it.
finally someone is on my type of time!
Reply
Old Mar 8, 2024 | 09:49 AM
  #18  
LilJayV10's Avatar
TECH Senior Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (39)
 
Joined: Apr 2007
Posts: 9,711
Likes: 999
From: Evansville,IN
Default

Both set of cheap headers I had on my car had this problem. When I priced a set of ARH headers, I decided it made more sense to go twin turbo.

Reply




All times are GMT -5. The time now is 09:35 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
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-6
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-7
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-8
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-9
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