Project: PBR-Built Z/28

[DynoDave]

That's good news. Look forward to seeing it out and about.

[Atrus]

Honestly thrilled to see an update in this thread! Do it up, Joel!

[formula218]

Glad to hear it'll be back!

[JoeliusZ28]

Thanks guys! Yes Kyle the replicas are heavier than factory Z06 wheels by a fairly substantial measure. Its a major difference in feel swapping to any of my other GM wheels.

[MP81]

Good to know. I'll have to see what the weight is on the OEWheels wheels that I'm looking to buy...granted, if I want that wheel in an 18, I don't have any other options...

Based on Amazon, that wheel shipping weight is 31 lbs. Figure maybe a pound or two of that is packaging. That's for an 18x8.5. The 18x8s I have on my Cobalt are 22lbs.

[JoeliusZ28]

Good to know. I'll have to see what the weight is on the OEWheels wheels that I'm looking to buy...granted, if I want that wheel in an 18, I don't have any other options...

Based on Amazon, that wheel shipping weight is 31 lbs. Figure maybe a pound or two of that is packaging. That's for an 18x8.5. The 18x8s I have on my Cobalt are 22lbs.

what are you putting 18" z06s on?

[MP81]

what are you putting 18" z06s on?

[Iroc'nthe87]

It's just too clean, Joel..Danggg

[JoeliusZ28]

So far I've spent some time inventorying parts, doing some light research on EFI Connection vs TorqueHead conversions, and researching Wideband oxygen sensors.

Figured id just copy my google-doc summary of preliminary research so far:


24x Project


Parts Already Accounted for:

• Ignition Coils (8)
• Aftermarket Valve Covers with Coil Mounts (2)
• 2002 LS1 PCM
• 2002 LS1/4L60e / EFI Connection modified harness
• Injector harnesses (2)
• EFI Connection 24x kit (Not going to use)

New/Additional Parts needed:

• TorqueHead 24x Base System ($580)
• Wideband O2 Gauge - AFR500v2 w/NTK production grade sensor - $364.99 https://www.bmotorsports.com/shop/pr...oducts_id/2337
• Jon’s Laptop and HPTuners setup for tuning

Prerequisites and Prep-Work:

1. Powdercoat aftermarket valve covers (coil mounts)
2. Download Current Tune and translate critical AFR/timing maps into excel
3. Translate excel maps into an HPTuners base tune
4. Sensor tune-up - Replace the following sensors due to age/fire concerns
   1. Low Coolant sensor
   2. MAP sensor
   3. IAC sensor
   4. IAT sensor
   5. Oxygen sensors
   6. ?
5. Repin EFI Connection Harness for T56 Car
   1. Acquire Pinout Documentation
   2. Remove any unnecessary 4L60e wiring
   3. Wait until project begins to add/configure T56 connections (Source connectors from existing LT1/T56 harness)

[MP81]

I can't recall if you have any colored "touches" under the hood, but doing the valvecovers in the same(ish) color as your hood scoop could be cool.

Sounds like you have nearly all the parts. Also still sounds like it's quite a bit of work from the wiring side.

[JoeliusZ28]

As scary as repinning the harness sounds I don't think it will be too bad. Going 4L60e > T56 is much easier than the other way around. I'm probably going to be removing all but 3-4 wires from the trans harness and soldering new connectors on the remaining wires.

I want to do the valve covers in wrinkle black. The intake manifold and strut brace has some red to match the hood, but thats it.

[MP81]

Oh, if those are already red (I couldn't remember), then black is the way to go.

[landstuhltaylor]

Good to know. I'll have to see what the weight is on the OEWheels wheels that I'm looking to buy...granted, if I want that wheel in an 18, I don't have any other options...

Based on Amazon, that wheel shipping weight is 31 lbs. Figure maybe a pound or two of that is packaging. That's for an 18x8.5. The 18x8s I have on my Cobalt are 22lbs.

Original Z06 18x10.5s are ~21 lbs, depending on which ones they are.

[MP81]

Original Z06 18x10.5s are ~21 lbs, depending on which ones they are.

The ones I'm looking at are C7 Z06 wheels...so the Z06 itself runs a 19x10 and a 20x12.

[JoeliusZ28]

Please tell me thats not for the second gen! Big diameter / pro touring look is cool but old cars need dish!