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Old 04-05-2011, 06:08 PM   #1
Robofuzz
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Ignition Coil Relocation and New Valve Covers

Here's the new valve covers that I will be installing on my GTO:



A big thanks to Stonebriar Chevrolet (site sponsor) for hooking me up with the GM Performance Parts valve covers as well as the 2006 steering wheel clock spring in the top left of the picture. The clockspring will be for adding lighted steering wheel controls at some future date.

Because the ignition coils are mounted on the stock valve covers, I will have to relocate the coils somewhere else. To that end, I have ordered a coil harness extension kit from Painless Performance and Moroso coil relocation brackets. I will be making my own MSD plug wires to fit wherever I mount the coils.

Stay tuned!

Update: Got the generic MSD wires and spark plug wire crimper. Still waiting on the coil relocation brackets and harness extension.

Update on 4/15: Still waiting on harness extension and coil brackets. Should arrive on 4/19.

Update on 4/25: Finally got the harness extension and coil brackets. Hopefully I can get this all installed in the next couple of weeks:

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2005 GTO - MBM M6 (slightly modded)
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Old 04-05-2011, 06:09 PM   #2
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I finally got out to the garage this afternoon (5/2/2011) to start mocking this up. The first thing I discovered is that the Moroso coil relocation kit does not fit my LS2 coils. So I will be fabbing up my own brackets.

Secondly, there is not a ton of room to mount the coils on the passenger side. However, I believe that I have found a way to do this without drilling any holes in my car. On the driver's side fender well, there are two studs that have a bracket attached that helps support the brake booster and clutch reservoir. I discovered that there is a matching set of studs on the passenger side, but with nothing attached to them. I am going to try and utilize these mounting locations for the coil brackets.

Here's my homemade driver's side coil bracket:

Fabbed this driver's side bracket up from some angle aluminum, threaded rods, and some coupler nuts for spacers. This will attach to the studs that hold the bracket that helps support the brake master cylinder and clutch reservoir.

Here's both brackets. Passenger side on the left, driver side on the right:


To clear all of the AC lines and antilock brake stuff, the passenger side coils will have to be mounted above the studs rather than below them. It's a tight squeeze but they fit in there on my new bracket.

** I am well aware of how dusty my engine compartment is. I apologize for that. Ever since I removed my hood scoop inserts, it's hard to keep it clean. **

Here's the studs (with nuts removed) I am talking about on the driver's side:


Companion studs on the passenger side:


Driver side coils mounted:



Passenger side coils mounted:

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Old 04-05-2011, 06:09 PM   #3
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Making my own spark plug wires was a learning experience. I got pretty fast on the last 3-4 wires, but the first ones took me FOREVER to get the coil boot on.

Driver side custom spark plug wires installed:


Passenger side custom spark plug wires installed:



Before coil relocation (but with coils removed):


After coil relocation:


In the above picture you can see the coil harness extensions - they are the unwrapped wires. These will be wrapped and tucked away to look factory when I'm done with everything. I have a kit on order from Jegs that contains convoluted tubing and self-fusing tape so I can wrap everything like a factory harness.

That's the progress so far. The car fired right up and everything works. I've driven the car over 50 miles and zero misfires - so I must have done OK on the spark plug wires.

I may also get the coil brackets powder coated black at some point. More updates to come probably this weekend.
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Old 04-05-2011, 06:09 PM   #4
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OK - I wasn't totally satisfied with the coil brackets, so I redid them and used smaller aluminum spacers near the angle aluminum to make the assembly a little more compact. I mounted the driver side coils upside down from how I had them in the pictures above. This keeps the plug wires up off the frame rail. Also, I rewired my coil harnesses to be more compact and look factory:





And... the finished project:







Notes, etc:

The coil extension harnesses were dressed up in wire loom and run to the relocated coil packs. They look totally factory.

On the driver's side coil bracket, I ended up mounting the coils upside down from how I had them originally in the first pictures. The spark plug wires were touching the frame rail and mounting them the new way keeps that from happening.

I need to dress up part of the factory harness because it is just wrapped in tape and doesn't have loom on it. It's the harness that would normally be hidden by the fuel rail covers and goes to the injectors. I'll do this when I detail the engine bay next time.

I took my time planning everything out and it took awhile but the results are awesome.

I need to shorten one plug wire and have ordered an additional MSD coil boot and crimp connector so I can do that.

If you would like me to manufacture you a set of coil relocation brackets, let's talk! My brackets allow you to remount your coils without drilling a single new hole in your car.
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Old 04-07-2011, 02:54 PM   #5
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very nice. Can't wait to see after the install
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Old 04-11-2011, 01:29 PM   #6
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Cant wait to see the final product
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Old 04-11-2011, 09:07 PM   #7
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Those valve covers look sharp Robo!
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Old 05-03-2011, 10:33 PM   #8
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making some nice progress, I like the attention to detail and not being satisfied with whats NOT available and going the extra to make your own.
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mods.... yep I've done them!
427 TVS2300 Killer Chiller Meziere ETP 245 Lonnie's twin pump system Hendrix-Engineering 8.8 LSPWR mini tubbed with 315's. Converted from M6 to a 4L80E built by FLT Yank SC3000
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Old 05-04-2011, 05:10 PM   #9
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I like !!!!!! great job so far!
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Old 05-04-2011, 05:17 PM   #10
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looking good.
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mods.... yep I've done them!
427 TVS2300 Killer Chiller Meziere ETP 245 Lonnie's twin pump system Hendrix-Engineering 8.8 LSPWR mini tubbed with 315's. Converted from M6 to a 4L80E built by FLT Yank SC3000
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Old 05-13-2011, 02:21 PM   #11
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Finished!! Final pics in post 4 above!
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Old 05-13-2011, 05:00 PM   #12
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Man... that does look pretty nice. Nice work, Robo!
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Old 05-13-2011, 06:40 PM   #13
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Thanks, Manny!
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Old 05-13-2011, 07:40 PM   #14
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That looks clean. I like it! Excellent job.
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Old 05-13-2011, 10:02 PM   #15
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Thanks! I'm pretty pleased with the way it turned out.
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Old 05-14-2011, 06:14 PM   #16
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OK - here's a few pics after I rerouted some wires and covered the injector harnesses in factory-style wire loom to clean up the top of the motor:







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Old 05-14-2011, 06:23 PM   #17
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Before:



After:
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Old 05-14-2011, 08:05 PM   #18
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good god..... that looks so much better then those dam stocker frc's. props to ya for a job well done. That sir it how the factory should have done it.
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mods.... yep I've done them!
427 TVS2300 Killer Chiller Meziere ETP 245 Lonnie's twin pump system Hendrix-Engineering 8.8 LSPWR mini tubbed with 315's. Converted from M6 to a 4L80E built by FLT Yank SC3000
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Old 05-15-2011, 09:27 AM   #19
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Quote:
Originally Posted by tom's2005gto View Post
good god..... that looks so much better then those dam stocker frc's. props to ya for a job well done. That sir it how the factory should have done it.
Thanks! It took a lot more effort than I anticipated, but the results are well worth it.
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Old 05-18-2011, 01:28 PM   #20
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Very nice Robo, that really cleans up the engine bay... I gotta ask, is that a ported intake?
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Old 05-18-2011, 03:07 PM   #21
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Quote:
Originally Posted by Poolshark1321 View Post
Very nice Robo, that really cleans up the engine bay... I gotta ask, is that a ported intake?
No but it's a ported throttle body...
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Old 05-24-2011, 03:20 PM   #22
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Haha nice, you still planning that stroker build? or is that kinda on the back burner...
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Old 05-24-2011, 05:54 PM   #23
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Quote:
Originally Posted by Poolshark1321 View Post
Haha nice, you still planning that stroker build? or is that kinda on the back burner...
I am still planning a build. However, I am debating at this point which way I want to go.

A couple of companies now make LS7-style heads for smaller bores. Meaning, I could do an LS3-based stroker with LS7-style heads and an LS7 intake. This would have a ton of low-end torque (which is not necessarily a good thing with our rear end setup).

But, I am still leaning toward my original plan of doing an actual LS7 wet sump build. Starting with an LS7 short block with a 24x reluctor wheel, adding LS7 heads and intake and a mild (for an LS7) cam. I kind of like the idea of it looking like the factory installed it.

But I may build a garage/workshop first.
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Old 05-27-2011, 01:51 PM   #24
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Old 06-01-2011, 02:22 PM   #25
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Have you looked into getting a LS2 or LS3 block re sleeved with the Darton dry sleeves or MID sleeves. You can make a 427 out of either sleeve... but the MID will support lots of FI or nitrous too. Also might look into the ERL Superdeck I and II...

Some good reading material...

http://forums.corvetteforum.com/c5-t...ct-begins.html

http://www.ls1tech.com/forums/genera...ck-blocks.html
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