C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:
Old Mar 2, 2015, 08:10 PM
How-Tos on this Topic
Last edit by: IB Advertising
See related guides and technical advice from our community experts:

Browse all: Engine and Powertrain
Print Wikipost

Katech Coil Relocation Kit

Thread Tools
 
Search this Thread
 
Old Mar 30, 2007 | 10:48 AM
  #21  
C_Williams@RPM's Avatar
0C_Williams@RPM
Former Vendor
 
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
Default

Originally Posted by Flatlander
With coils mounted on frame rails are there any problems with rain splashing or water puddles?

Not an issue at all.

This location offers great cooling, short wires and is well protected from the elements.
Reply
Old Mar 31, 2007 | 05:21 PM
  #22  
C7LOU's Avatar
C7LOU
Drifting
20 Year Member
 
Joined: May 2000
Posts: 1,769
Likes: 147
From: Penfield NY
Default

Originally Posted by jak112460
Beautiful! Where did you get the valve covers and how much? You can PM me if you don't want to publish price. Thanks!
Reply
Old Mar 31, 2007 | 05:29 PM
  #23  
FactoryRaceCar's Avatar
FactoryRaceCar
Race Director
Supporting Lifetime Gold
20 Year Member
 
Joined: Nov 2001
Posts: 18,682
Likes: 4
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12
Default

Charlie your kit looks great!
Reply
Old Mar 31, 2007 | 06:27 PM
  #24  
Mike94ZLT1's Avatar
Mike94ZLT1
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2002
Posts: 8,352
Likes: 103
From: In the pit, trying to love someone.
Default

Originally Posted by C_Williams@RPM
Love the Katech stuff and recommend it with their own covers..

However, since they don't sell a universal kit, I thought I'd post the availability of mine here. If this is in any way offensive to Katech, moderators please remove.


I have two kits that work with any covers. Here's the pictures...

Coil Relocation Kit - Moves Coils off Valve Covers



Coil Relocation Kit - Moves Coils over the Valve Covers
Are those LS2 intake manifolds?
Reply
Old Mar 31, 2007 | 06:34 PM
  #25  
thetorch's Avatar
thetorch
Burning Brakes
20 Year Member
 
Joined: Jul 2000
Posts: 1,134
Likes: 1
From: Arlington Texas
Default

Originally Posted by C_Williams@RPM
The over the cover kit mounts to existing threaded holes on the intake manifold. Takes about two minutes to mount.

The harness replaces the factory coil harness. You can can easily use the factory piece, just takes some time to make it fit cleanly. My harness is pre-made and makes the install sanitary and totally plug 'n play.
Thanks Charlie. A few more questions:

1. Can I use the 'over cover' kit with aftermarket fuel rails?
2. Any issues with the 'over cover' kit and FAST 90 intake?
3. I already have the Katech long wires, can I buy just the hardware and harness for the 'over cover' kit?
4. I was going to buy the ARP intake bolt kit, does the 'over cover' kit replace some of the intake bolts? Any issues otherwise using the ARP intake bolt kit?
Reply
Old Apr 1, 2007 | 12:08 AM
  #26  
C_Williams@RPM's Avatar
0C_Williams@RPM
Former Vendor
 
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
Default

Originally Posted by Mike94ZLT1
Are those LS2 intake manifolds?
No, those are both LS7 intakes.
Reply
Old Apr 1, 2007 | 12:15 AM
  #27  
C_Williams@RPM's Avatar
0C_Williams@RPM
Former Vendor
 
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
Default

Originally Posted by thetorch
Thanks Charlie. A few more questions:
Answers below...thanks

Originally Posted by thetorch
1. Can I use the 'over cover' kit with aftermarket fuel rails?
Yes, just move the mounting locations.

On a stock fuel rail system the coil kit mounting tabs mount over the fuel rail tab - just lift the bolt, slide the mount over the fuel rail tab - re-insert bolt.

With after market rails you will have to one of the manifold bolts.


Originally Posted by thetorch
2. Any issues with the 'over cover' kit and FAST 90 intake?
None at all.

Originally Posted by thetorch
3. I already have the Katech long wires, can I buy just the hardware and harness for the 'over cover' kit?
Yes.

Originally Posted by thetorch
4. I was going to buy the ARP intake bolt kit, does the 'over cover' kit replace some of the intake bolts? Any issues otherwise using the ARP intake bolt kit?
No, there is plenty of thread as the mounting tab is .133 thick.
Reply
Old Apr 1, 2007 | 12:37 AM
  #28  
thetorch's Avatar
thetorch
Burning Brakes
20 Year Member
 
Joined: Jul 2000
Posts: 1,134
Likes: 1
From: Arlington Texas
Default

Originally Posted by C_Williams@RPM
Answers below...thanks



Yes, just move the mounting locations.

On a stock fuel rail system the coil kit mounting tabs mount over the fuel rail tab - just lift the bolt, slide the mount over the fuel rail tab - re-insert bolt.

With after market rails you will have to one of the manifold bolts.




None at all.



Yes.



No, there is plenty of thread as the mounting tab is .133 thick.
Thanks Charlie, I'll give you a call on Monday to order.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Apr 1, 2007 | 12:46 AM
  #29  
thetorch's Avatar
thetorch
Burning Brakes
20 Year Member
 
Joined: Jul 2000
Posts: 1,134
Likes: 1
From: Arlington Texas
Default

Originally Posted by C_Williams@RPM
Coil Relocation Kit - Moves Coils over the Valve Covers
Charlie,
Do you have a picture of this car from the passenger side? I'm looking to use the same covers and coil relocation kit and wanted to see if it would interfere with the oil fill cap.
Reply
Old Apr 1, 2007 | 08:40 AM
  #30  
99 C-5 F1C VETTE's Avatar
99 C-5 F1C VETTE
Drifting
 
Joined: May 2005
Posts: 1,697
Likes: 0
From: Stamford CT
Default

I understand why GM wants the coils there, but its way to damm ugly on such a pretty motor. The restance on the wires do to lenght can be delt with, larger wires with little distortion, hoter coil packs( although the stockers seem to be fine). Why would you go through all the trouble of relocating the coils to the upper part of the valve cover, if your going to do it put the out of sight. And guys, your all mechanically inclined here ( most of us) , I just cant see spending over $150.00 let alone $400.00 for a couple brackets to mount the coils. Boy oh boy some of these venders just love you guys.
Reply
Old Apr 1, 2007 | 10:33 AM
  #31  
C_Williams@RPM's Avatar
0C_Williams@RPM
Former Vendor
 
Joined: May 2005
Posts: 3,749
Likes: 4
From: Valencia Ca
Default

Originally Posted by 99 C-5 F1C VETTE
I understand why GM wants the coils there, but its way to damm ugly on such a pretty motor. The restance on the wires do to lenght can be delt with, larger wires with little distortion, hoter coil packs( although the stockers seem to be fine). Why would you go through all the trouble of relocating the coils to the upper part of the valve cover, if your going to do it put the out of sight. And guys, your all mechanically inclined here ( most ofus) , I just cant see spending over $150.00 let alone $400.00 for a couple brackets to mount the coils. Boy oh boy some of these venders just love you guys.
Here's my answers;

Several reasons for moving the coils either off or over the cover;

1) allow use of any after market cover
2) makes cover removal easy
3) reduce coil heat (and the over the cover reduces the heat dramatically as well as the off the cover does - you would be amazed at the heat transfer from the valve covers)

Your statement on the cost, with the the inference that it is over-priced is wrong. You need to cost out components (all either SS or anodized aluminum), add the labor for harnesses (all with premium oil/heat resistant sleeving and new connectors) and finally factor in a new set of premium ignition wires.

Reply
Old Apr 1, 2007 | 11:35 AM
  #32  
full moon's Avatar
full moon
Racer
10 Year Member
 
Joined: Dec 2004
Posts: 263
Likes: 0
From: Safety Harbor Fl
St. Jude Donor '11-'12-'13-'14
Default

Originally Posted by C5LOU
Beautiful! Where did you get the valve covers and how much? You can PM me if you don't want to publish price. Thanks!
I am going to be installing a cam in a couple of weeks and thought this would be a good time to relocate coil packs and get a different look with the valve covers.....Thanks Dave

Last edited by full moon; Apr 1, 2007 at 11:38 AM.
Reply
Old Apr 1, 2007 | 12:38 PM
  #33  
thetorch's Avatar
thetorch
Burning Brakes
20 Year Member
 
Joined: Jul 2000
Posts: 1,134
Likes: 1
From: Arlington Texas
Default

Originally Posted by C5LOU
Beautiful! Where did you get the valve covers and how much? You can PM me if you don't want to publish price. Thanks!
These are GM Performance Parts valve covers. The part numbers are as follows:

25534398 - LS Center-Bolt Competition Valve Cover (with breather hole)
Aluminum valve cover designed for production center-bolt
LS Series cylinder heads. Sold as single piece. Order two
per engine.

25534399 - LS Center-Bolt Competition Valve Cover
Aluminum valve cover designed for production center-bolt
LS Series cylinder heads. Sold as single piece. Order two
per engine.

So you will need a combination of these two part numbers for a complete set. The best price I have found so far is from SDPC2000 dot com.
Reply
Old Apr 1, 2007 | 12:40 PM
  #34  
C7LOU's Avatar
C7LOU
Drifting
20 Year Member
 
Joined: May 2000
Posts: 1,769
Likes: 147
From: Penfield NY
Default

Thanks for the information!
Reply
Old Apr 9, 2007 | 06:04 PM
  #35  
full moon's Avatar
full moon
Racer
10 Year Member
 
Joined: Dec 2004
Posts: 263
Likes: 0
From: Safety Harbor Fl
St. Jude Donor '11-'12-'13-'14
Default

To anyone who has painted the chevrolet valve covers........
I got the new valve covers in today..What paint did you use on your covers? I picked up some 1200% high temp engine paint and primer(ceramic), but was not sure how it would adhere...Thanks Dave

Last edited by full moon; Apr 9, 2007 at 06:08 PM.
Reply
Old Apr 9, 2007 | 06:41 PM
  #36  
Mike Mercury's Avatar
Mike Mercury
Team Owner
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Default

FYI; for the more adventurous;... you can relocate the coils without a kit:

http://forums.corvetteforum.com/show....php?t=1595822
Reply
Old Apr 13, 2007 | 10:20 AM
  #37  
full moon's Avatar
full moon
Racer
10 Year Member
 
Joined: Dec 2004
Posts: 263
Likes: 0
From: Safety Harbor Fl
St. Jude Donor '11-'12-'13-'14
Default

Originally Posted by Mike Mercury
FYI; for the more adventurous;... you can relocate the coils without a kit:

http://forums.corvetteforum.com/show....php?t=1595822
Mike how did you fasten the baffle on the under side of cover and did you tap and thread the brass fitting? Have you had any problems? I have ls6 heads so I only have the one port on the passenger side.I was considering capping off the air tube, and letting it breath through the valve cover.. Thanks Dave
Reply

Get notified of new replies

To Katech Coil Relocation Kit

Old Apr 14, 2007 | 02:20 PM
  #38  
02bpdz06's Avatar
02bpdz06
Pro
10 Year Member
 
Joined: Dec 2004
Posts: 575
Likes: 0
From: Meriden Ct
Default

Originally Posted by jak112460
Reply
Old Jul 20, 2008 | 11:38 AM
  #39  
C7LOU's Avatar
C7LOU
Drifting
20 Year Member
 
Joined: May 2000
Posts: 1,769
Likes: 147
From: Penfield NY
Default

Originally Posted by thetorch
These are GM Performance Parts valve covers. The part numbers are as follows:

25534398 - LS Center-Bolt Competition Valve Cover (with breather hole)
Aluminum valve cover designed for production center-bolt
LS Series cylinder heads. Sold as single piece. Order two
per engine.

25534399 - LS Center-Bolt Competition Valve Cover
Aluminum valve cover designed for production center-bolt
LS Series cylinder heads. Sold as single piece. Order two
per engine.

So you will need a combination of these two part numbers for a complete set. The best price I have found so far is from SDPC2000 dot com.

The passenger side has the breather hole. How did you fasten the breather in?
Reply
Old Jul 20, 2008 | 01:04 PM
  #40  
C7LOU's Avatar
C7LOU
Drifting
20 Year Member
 
Joined: May 2000
Posts: 1,769
Likes: 147
From: Penfield NY
Default

Originally Posted by C5LOU
The passenger side has the breather hole.* How did you fasten the breather in?
I meant to say the passenger side has the oil fill opening in the valve cover.* Does the OE unit somehow fit into the valve covers you used?
Reply



All times are GMT -4. The time now is 08:42 AM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-7
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-8
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-9
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE