C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

American Racing Headers

Thread Tools
 
Search this Thread
 
Old Jan 26, 2018 | 04:33 AM
  #1  
ZEROVETTE7's Avatar
ZEROVETTE7
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Default American Racing Headers

Hi All,
Will these ARH 84134300LSTNC fit my 1991 A4 stock, with no issues?
and will they be compatible with 3'' Borla exhaust system? (or other brand)

Appreciate the feedback.
Reply
Old Jan 29, 2018 | 02:46 AM
  #2  
ZEROVETTE7's Avatar
ZEROVETTE7
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Default

Anyone?
Reply
Old Jan 29, 2018 | 04:53 AM
  #3  
grandspt's Avatar
grandspt
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2004
Posts: 1,352
Likes: 289
From: MA
Default

I can't answer your question, but no one would know better than ARH. I would give them a call directly and talk with them.
When I installed the ARH headers on my 96 I called them with several questions and they tried to help out.
Reply
Old Jan 29, 2018 | 05:07 AM
  #4  
ZEROVETTE7's Avatar
ZEROVETTE7
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Default

Originally Posted by grandspt
I can't answer your question, but no one would know better than ARH. I would give them a call directly and talk with them.
When I installed the ARH headers on my 96 I called them with several questions and they tried to help out.
Appreciate the reply, I’m overseas actually but I’ll try and contact them directly. I just wanted to check from a personal experience if anyone installed them. Thanks
Reply
Old Jan 29, 2018 | 10:34 AM
  #5  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
Default

I might be wrong, but when I bought my ARH headers for my 84, they had only one fitment for all the years, L98 through LT1. As mentioned, check with ARH.
Reply
Old Feb 13, 2018 | 01:00 AM
  #6  
ZEROVETTE7's Avatar
ZEROVETTE7
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Default

Contacted ARH and they informed me that their headers (C4-84134300LSTWC) won’t be a direct fit and that it requires some modifications, I requested some more details and waiting for the reply.

If any one can shed some lights on the same that would be helpful as I’m gonna order them for overseas. And returning is not an option if they didn’t fit!
TIA
Reply
Old Feb 13, 2018 | 05:16 AM
  #7  
grandspt's Avatar
grandspt
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2004
Posts: 1,352
Likes: 289
From: MA
Default

My headers didn't come with instructions, so they assume you have some Hot Rodding capabilities.
They also lacked in giving me the header bolts, spacers for AC, dipstick. But they gave you decent gaskets to mount to the heads and the fit and finish was very good.
So with that I don't know the difference between bolting the headers on an LT4 vs L98.
My catalytic converters were mounted further back than stock requiring me to make heat shields (ARH said that it doesn't need shielding if you can put a finger between the cat and the floor, I did not agree).
Overall good headers with plenty of clearance but you will have to think out of the box as they are not a direct replacement. I don't think any header manufacturer is a true direct bolt on.
Hope this helps.

Last edited by grandspt; Feb 13, 2018 at 05:18 AM.
Reply
Old Feb 13, 2018 | 06:31 AM
  #8  
ZEROVETTE7's Avatar
ZEROVETTE7
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Default

Originally Posted by grandspt
My headers didn't come with instructions, so they assume you have some Hot Rodding capabilities.
They also lacked in giving me the header bolts, spacers for AC, dipstick. But they gave you decent gaskets to mount to the heads and the fit and finish was very good.
So with that I don't know the difference between bolting the headers on an LT4 vs L98.
My catalytic converters were mounted further back than stock requiring me to make heat shields (ARH said that it doesn't need shielding if you can put a finger between the cat and the floor, I did not agree).
Overall good headers with plenty of clearance but you will have to think out of the box as they are not a direct replacement. I don't think any header manufacturer is a true direct bolt on.
Hope this helps.
thanks appreciate the feedback 👍🏻
Ill do some more research until I hear from them again, and look at other brands if any that might fit the ride.

Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-1

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-2

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-3

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-4

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-5

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-6

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-7

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-8

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-9

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
Old Feb 13, 2018 | 07:53 AM
  #9  
ghoastrider1's Avatar
ghoastrider1
Le Mans Master
15 Year Member
 
Joined: May 2006
Posts: 7,708
Likes: 266
From: indy indiana
Default

I bought headman headers. The "fitment issues" required me to almost beat one of the pipes coming of a cyclinder, almost flat.
Reply
Old Feb 13, 2018 | 04:28 PM
  #10  
grandspt's Avatar
grandspt
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2004
Posts: 1,352
Likes: 289
From: MA
Default

Originally Posted by ZEROVETTE7


thanks appreciate the feedback 👍🏻
Ill do some more research until I hear from them again, and look at other brands if any that might fit the ride.

Checkout my old post on the ARH headers to get an idea of what you might need to do to install the ARH headers, it has some pictures: https://www.corvetteforum.com/forums...6-exhaust.html

The headers bolted to the engine easily and it has no clearance issues (no banging on pipes necessary) other than the cats were too close to the floor.
For difficulty installing them on an LT4 from 1 - 10 (10 being the easiest 1 being the hardest), I give them a 6.
Reply
Old Feb 15, 2018 | 04:52 AM
  #11  
ZEROVETTE7's Avatar
ZEROVETTE7
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Default

Thanks for the info 👍🏻

I came across Hooker headers also while reading old posts here in CF any feedback on those?

And if I’m thinking of adding some bolts on mods, what size is more suitable for the ride:
1-3/4” X 1-7/8 primaries and 3” Xpipe
or
1-3/4” primaries and 2-1/2” Xpipe

with no cats Borla sys.

TIA
Reply
Old Feb 15, 2018 | 10:12 AM
  #12  
ghoastrider1's Avatar
ghoastrider1
Le Mans Master
15 Year Member
 
Joined: May 2006
Posts: 7,708
Likes: 266
From: indy indiana
Default

Don't forget, with many headers, you must make a spacer to rebolt some brackets
Reply
Old Feb 15, 2018 | 12:11 PM
  #13  
383vett's Avatar
383vett
Race Director
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
Default

Originally Posted by ZEROVETTE7
Thanks for the info 👍🏻

I came across Hooker headers also while reading old posts here in CF any feedback on those?

And if I’m thinking of adding some bolts on mods, what size is more suitable for the ride:
1-3/4” X 1-7/8 primaries and 3” Xpipe
or
1-3/4” primaries and 2-1/2” Xpipe

with no cats Borla sys.

TIA
I went from Hooker Super Competition headers to ARH and my car gained a tenth and a half in the quarter. The stepped 1 3/4 to 1 7/8 worked for me. I have a 406 and shift at 6700 on a strip only car. I would think the 1 3/4 primaries would work in your situation.
Reply
Old May 5, 2022 | 12:41 PM
  #14  
Capt Mike's Avatar
Capt Mike
Racer
Veteran: Army
Photogenic
Photoriffic
Liked
 
Joined: Jan 2015
Posts: 499
Likes: 63
From: Arkansas
Default American Racing Heders

ZEROVETTE7,

Did you purchase a set of ARH ??

I purchased a set for my '87 and have two fitment issues.

Michael..
Reply

Get notified of new replies

To American Racing Headers





All times are GMT -4. The time now is 04:19 PM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE