ARH header install on my LS3
Thread Starter
Drifting
Joined: Jan 2008
Posts: 1,518
Likes: 37
From: The Woodlands Texas
ARH header install on my LS3
I got the headers on Friday. Great looking product with really good looking welds.
First the passenger side. I had to make a small mod to my Flaming River cross member bracket and that was all. I only had to cut a 1/2" angle cut off the tip of the bracket where the bottom of one tube was touching. Here's the pics.
The driver side was not so good. The collectors are running into the floor and therefore they won't bolt up properly. If they bolt up correctly, they will be very close to my rack steering column. It looks like they were fab'd out of tolerance. I'm thinking if they were done right, the first exhaust pipe would need to be tucked a bit tighter to the others to clear the steering.
There is about 4" of clearance from the ball/ socket connector to the ground. That feels a bit tight. I wondering if I should have gone with slip fit to pick up the extra 3/8".
I'll be getting with Steve @ ARH to figure out next steps.
First the passenger side. I had to make a small mod to my Flaming River cross member bracket and that was all. I only had to cut a 1/2" angle cut off the tip of the bracket where the bottom of one tube was touching. Here's the pics.
The driver side was not so good. The collectors are running into the floor and therefore they won't bolt up properly. If they bolt up correctly, they will be very close to my rack steering column. It looks like they were fab'd out of tolerance. I'm thinking if they were done right, the first exhaust pipe would need to be tucked a bit tighter to the others to clear the steering.
There is about 4" of clearance from the ball/ socket connector to the ground. That feels a bit tight. I wondering if I should have gone with slip fit to pick up the extra 3/8".
I'll be getting with Steve @ ARH to figure out next steps.
Race Director
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From: Forked River NJ
I found similar on the drivers side that it was up against the floor and could not be bolted to the head. 4 inches is not to bad as I had 4 1/2 with my Gen 1 SB with Hooker super comps. That would be about the minimum I would want to run.
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From: Deer Park NEW YORK
Guys, I'm currently up here in Mass/Westover AFB doing some C5(Aircraft) work.
Phil and myself will go over the combos that have been used in the past few months that have worked correctly.
When posting regarding any C3 LS ARH fitment concerns please include motor, trans and body mounts used.
Thanks very much!!
Steve
Phil and myself will go over the combos that have been used in the past few months that have worked correctly.
When posting regarding any C3 LS ARH fitment concerns please include motor, trans and body mounts used.
Thanks very much!!
Steve
Thread Starter
Drifting
Joined: Jan 2008
Posts: 1,518
Likes: 37
From: The Woodlands Texas
My setup
CIC mount (similar to dirty dingo) with engine in stock location.
Flaming river rack
Hydraulic clutch
Keisler RS500 tranny
CIC mount (similar to dirty dingo) with engine in stock location.
Flaming river rack
Hydraulic clutch
Keisler RS500 tranny
Last edited by CWerner; Feb 23, 2014 at 03:37 PM.
Race Director
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From: Forked River NJ
My setup is Dirty dingo mounts. These are a little older but sliders were not available when I did the swap. Motor as far as what they say is in the stock location. Hydraulic clutch setup with Steeroids rack. T56 trans from an 06 GTO. I'd like to get my car up there to ARH but this weather is not cooperating. I only have access to an open trailer.
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From: Deer Park NEW YORK
Flaming River rack is new to my list, we have never used that FR on the C3's.
What transmission mount is used?
What body to frame mounts?
The ARH C3 are based on Dirty Dingo Sliders mounts.
What transmission mount is used?
What body to frame mounts?
The ARH C3 are based on Dirty Dingo Sliders mounts.
Last edited by SteveDoten@ARH; Feb 23, 2014 at 10:50 PM.
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From: Deer Park NEW YORK
If not using dirty dingo sliders, there is possibility of non fitment.
The trans mount and xmember used?
Thread Starter
Drifting
Joined: Jan 2008
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From: The Woodlands Texas
Steve,
Additional info:
Energy Suspension motor mounts attached to the CIC (DDduplicate) sliders.
Stock crossmember for transmission. (Removable)
Stock body to frame mounts.
On my fitment, it appears the driver header is made wrong. Per the pics, the collector has an interference fit on the driver side, but not on the passenger. It looks like the horizontal section of the header is angled up instead of being parallel to the car (like the passenger side is).
This has nothing to do with sliders, motor mounts or transmission.
Additional info:
Energy Suspension motor mounts attached to the CIC (DDduplicate) sliders.
Stock crossmember for transmission. (Removable)
Stock body to frame mounts.
On my fitment, it appears the driver header is made wrong. Per the pics, the collector has an interference fit on the driver side, but not on the passenger. It looks like the horizontal section of the header is angled up instead of being parallel to the car (like the passenger side is).
This has nothing to do with sliders, motor mounts or transmission.
Last edited by CWerner; Feb 24, 2014 at 07:33 AM.
Melting Slicks
Joined: Feb 2009
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From: Dallas Georgia
2020 Corvette of the Year Finalist (track prepared)
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Damn, I see dented primary tubes in my future if my install looks like this....
The only difference between motor mounts would be forward rear mount correct? It should not affect the ground or floor board clearance.
I wish Dan Lemon made headers for a C3 LS swap!
Fingers are still crossed that I'll be one of the lucky ones as I have the "ideal" combo per ARH.
The only difference between motor mounts would be forward rear mount correct? It should not affect the ground or floor board clearance.
I wish Dan Lemon made headers for a C3 LS swap!
Fingers are still crossed that I'll be one of the lucky ones as I have the "ideal" combo per ARH.
Last edited by fleming23; Feb 24, 2014 at 09:20 PM.
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From: Forked River NJ
Thanks for that picture. It sure looks like they move that first tube in a little compared to the headers I had from them. Maybe these would be a better fit now on my passenger side. I'll have to dig up the picture I have.
This header from Werner sure does not look like the same set of headers I tried on my car. That first tube definitely goes inside the second tube way more than the one I had.
This header from Werner sure does not look like the same set of headers I tried on my car. That first tube definitely goes inside the second tube way more than the one I had.
Last edited by Gordonm; Feb 24, 2014 at 09:11 PM.
Thread Starter
Drifting
Joined: Jan 2008
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From: The Woodlands Texas
Flem
I think you are meaning the "sliders" that the mounts bolt too. If so, yes. They only move the engine forward or backwards. Mine position the back of the block in the original SB position.
I think you are meaning the "sliders" that the mounts bolt too. If so, yes. They only move the engine forward or backwards. Mine position the back of the block in the original SB position.
Melting Slicks
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From: Dallas Georgia
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Also, if anyone feels it could help I can take photos of my uninstalled headers. They are in the basement and I haven't even opened the box yet.
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From: Forked River NJ
Passenger side
Drivers side
Last edited by Gordonm; Feb 24, 2014 at 09:32 PM.
Melting Slicks
Joined: Feb 2009
Posts: 2,797
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From: Dallas Georgia
2020 Corvette of the Year Finalist (track prepared)
C3 of Year Winner (track prepared) 2019
Sorry, took these right after your post but as soon as I sat down at the computer I had what felt like 500 updates that caused it to take forever to restart!
Hope these help! To my untrained eye, both your headers and mine look pretty much identical (as would be expected I suppose.)
Was kind of good to see them out of the box! I hope they fit my car well because I do like them!
Used a box for mock-up purposes.
Hope these help! To my untrained eye, both your headers and mine look pretty much identical (as would be expected I suppose.)
Was kind of good to see them out of the box! I hope they fit my car well because I do like them!
Used a box for mock-up purposes.
Race Director
Joined: Dec 1999
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From: Forked River NJ
Yes those look the same but different from CWerner if only because the O2 bung is on the inside. I wonder if his were the next batch made. Interesting. Maybe Steve can shed some light on this.
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From: Deer Park NEW YORK
We will return any ARH if fitment is an issue.2. Motor Mounts, you slide the motor fore and aft, the height is affected because the motor sits at an angle, correct?
Yes, but only in reference to Steve's comment that the Dirty Dingo sliders should matter, or matter in this case. Ground clearance and floor board clearance will not be largely affected by slider mounts I would think. If the motor was largely off forward/back I could see how it might make a difference but even so, minimally.
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Joined: Aug 2008
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From: Deer Park NEW YORK
I do want to mention these 3 factors here.
1. It is a standing offer that with the multiple racks/mounts/trans used on these swaps, we are covering all shipping costs and will fully refund any order if the C3 swap combo does not work.
2. Can anyone compare side by side the DD and CIC mounts to verify they are 100% the same in height/angle?
3. Are there any changes made to the frame or engine xmember/trans xmember on the 68-82 C3's
1. It is a standing offer that with the multiple racks/mounts/trans used on these swaps, we are covering all shipping costs and will fully refund any order if the C3 swap combo does not work.
2. Can anyone compare side by side the DD and CIC mounts to verify they are 100% the same in height/angle?
3. Are there any changes made to the frame or engine xmember/trans xmember on the 68-82 C3's