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SpectatorRacing 2004 Corvette Z06 Road Race car build
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Several hundred hours after build inception the car is off for a windshield, alignment, and tune. I finally have some time to post pictures for the Guru...

Here is the shell as I picked it up last summer, Z06 rolling chassis with a cage. The cage was built by Phoenix Performance outside of Philly.

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Posted on: 2014/4/1 14:25
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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First step, take it all apart.

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Posted on: 2014/4/1 14:33
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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Suspension removal

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Posted on: 2014/4/1 14:42
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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Next step...put a C4 engine in it.
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Posted on: 2014/4/1 14:48
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Matatk Re: 2004 Corvette Z06 Road Race car build
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Wow, Jon, that is a huge undertaking. What did the rolling chassis include and/or what was missing? Did the previous owner lose interest?
Posted on: 2014/4/2 1:56
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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You can pick up the car in any state you want, from bare bones to fully functional car with a pedigree. Your price range then varies accordingly...

I didn't like the used race cars I was seeing and didn't want one that was wrecked. All race cars have been or will be wrecked at some point, but I didn't want to start there. This one was a fresh build from a clean chassis so I bought it.

Doesn't everyone build their cars from scratch?
Posted on: 2014/4/2 18:59
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SpectatorRacing Engine
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Install the SPEC aluminum FW and puck style clutch:

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Drop in the engine:

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Whoops, pull it out again.

Lesson learned. Don't draw the engine to the torque tube with the bolts...

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Posted on: 2014/4/2 19:06
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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Put it back in, bolt the cradle in under it:

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And leave it in this time.


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Posted on: 2014/4/2 19:14
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bogus Re: 2004 Corvette Z06 Road Race car build
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damn... impressive!!!
Posted on: 2014/4/2 19:48
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Andrew Re: 2004 Corvette Z06 Road Race car build
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Quote:

SpectatorRacing wrote:
Next step...put a C4 engine in it.
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Hey, that doesn't look like a C4 motor! What LS is the motor?

Nice work. This one will be fun to follow.
Posted on: 2014/4/2 20:58
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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That's an LS6. It was briefly in the C4 for the summer of 2012. I pulled it to save it for this car and put an LS2 in the C4.

Now I kinda wish I had kept the LS2 for this car, the torque would have been nice.
Posted on: 2014/4/2 21:18
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pianoguy Re: 2004 Corvette Z06 Road Race car build
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Very cool!

I'm sure I would've said something like, "Gosh, I've cracked the bellhousing!" ;-)
Posted on: 2014/4/2 23:08
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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I said words that didn't even rhyme with that...

They rhymed with the words for domestic waterfowl and green ladies in black outfits riding brooms.
Posted on: 2014/4/3 1:25
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Matatk Re: 2004 Corvette Z06 Road Race car build
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Quote:

SpectatorRacing wrote:
I said words that didn't even rhyme with that...

They rhymed with the words for domestic waterfowl and green ladies in black outfits riding brooms.


Well caboose rhymes with goose, and brooms and outfits clearly refers to a maid so you must have rhymed that with spade. I don't see what the big deal is?

Is the bellhousing an expensive "oops" or relatively inexpensive/accessible?
Posted on: 2014/4/3 3:15
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BillH Re: 2004 Corvette Z06 Road Race car build
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Quote:

SpectatorRacing wrote:
I bought it.

Doesn't everyone build their cars from scratch?


No, we get them from England.
Posted on: 2014/4/3 13:18
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BillH Re: 2004 Corvette Z06 Road Race car build
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Lookin' good Jon.

If course, it will look better on the track than in the shop.

Are you installing any data acquisition ?
Posted on: 2014/4/3 13:24
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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Turns out bellhousings are a rare find. I was having no luck finding a used one and the dealer said there were only three new ones in the entire country. So I bought one.

The next day I found two used ones cheap, of course. So I bought those, too. I now have a stash, although I hope never to break one again. I am smarter now. And know that they changed the pilot bearing in 2005...

Yup it will have data aq. I'll pull the Vbox out of the C4.
Posted on: 2014/4/3 19:55
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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Suspension back with solid bushings installed:


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Posted on: 2014/4/3 20:38
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Matatk Re: 2004 Corvette Z06 Road Race car build
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Pardon my ignorance, but what bushings were in there before if not solid?
Posted on: 2014/4/4 2:17
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BillH Re: 2004 Corvette Z06 Road Race car build
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Quote:

SpectatorRacing wrote:

Yup it will have data aq. I'll pull the Vbox out of the C4.


My experience is with the PI Systems. The new car has a CDS (Competition Data Systems) box and dash.
It'll be a learning curve depending on how many sensors are installed on the car.
Posted on: 2014/4/4 13:28
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BillH Re: 2004 Corvette Z06 Road Race car build
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Pardon my ignorance, but what bushings were in there before if not solid?


Squishy, girly ones.
Posted on: 2014/4/4 13:29
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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Intermission over, had a couple of weeks off to actually drive it.

I think we were here; engine in, working on accessories, plumbing, and wiring.

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Posted on: 2014/4/21 19:35
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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Time to build all of the oil lines for the cooler and Accusump.

Part collection:

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Measure twice, cut once...or many times.

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Finished line #1, complete with fire sleeve. Six more to go.


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Setting up the T fitting and check valve for the Accusump. The check valve ensures that the oil goes into the engine and not back into the cooler.


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Posted on: 2014/4/21 20:08
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Ultraman Re: 2004 Corvette Z06 Road Race car build
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munch crunch....great pics...keep them coming...very interesting.....
Posted on: 2014/4/21 22:01
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BillH Re: 2004 Corvette Z06 Road Race car build
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Quote:

SpectatorRacing wrote:
Time to build all of the oil lines for the cooler and Accusump.

Part collection:


Measure twice, cut once...or many times.



Finished line #1, complete with fire sleeve. Six more to go.




Setting up the T fitting and check valve for the Accusump. The check valve ensures that the oil goes into the engine and not back into the cooler.




U got Koul Tools to put them together?
Posted on: 2014/4/22 1:43
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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U got Koul Tools to put them together?


Naaaah. Just the vise jaw inserts and the big cutter. I can assemble a line pretty quickly with only three or four fingertip punctures apiece.

I did study the differences between all the brands and types since there is such a huge cost disparity among them. For example, the range of a 10AN 90* swivel is from $17.95 for a summit brand to $30 for an Aeroquip. Fragola, Earl's and Russell were somewhere in between. I read good things about Fragola and talked to their tech guys a few times so I used them for most of the plumbing. Anywhere that was easy to get to (for example, the valve is inside the cockpit) I used Summit brand. Figured if they leaked it would be easy to change.

One interesting fact - the Fragola rep said you west coast guys like the cutter style fittings and us over here in the east prefer the slip fit. He said there was no advantage or disadvantage to either, it seemed to be a regional thing.

Bunch of weirdos over there on the coast...
Posted on: 2014/4/22 14:23
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BillH Re: 2004 Corvette Z06 Road Race car build
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I've almost totally gone away from any braided stainless, it's just a pain in the ass.

All I use now is the blue slip fit.

Never had a failure with it.


Attach file:



jpg  2014-04-20 07-13-30_0001.JPG (0.00 KB)


jpg  2014-04-20 07-13-46_0002.JPG (0.00 KB)

Posted on: 2014/4/22 14:28
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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I've seen it but have never used it. What is the pressure rating? Is it oil only, or fuel, PS, etc too?
Posted on: 2014/4/22 15:09
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BillH Re: 2004 Corvette Z06 Road Race car build
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Quote:

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I've seen it but have never used it. What is the pressure rating? Is it oil only, or fuel, PS, etc too?


Not recommended for fuel.
Both Summit's twist tite and Areoquip's socketless -250psi, 300 degrees.

Areoquip does have a high pressure hose (blue synthetic0 that can be used for anything (2,250 psi) but it uses the 2 piece , reusable fittings rather than the push on.

The blue hose has good abrasion resistance (like tyraped to a frame tube).

Posted on: 2014/4/22 15:56
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pianoguy Re: 2004 Corvette Z06 Road Race car build
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Quote:

BillH wrote:
I've almost totally gone away from any braided stainless, it's just a pain in the ass.

All I use now is the blue slip fit.

Never had a failure with it.



Bill, that last pic makes it look like you have a blinker fluid reservoir ;-)
Posted on: 2014/4/22 16:34
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BillH Re: 2004 Corvette Z06 Road Race car build
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Quote:

pianoguy wrote:
Quote:

BillH wrote:
I've almost totally gone away from any braided stainless, it's just a pain in the ass.

All I use now is the blue slip fit.

Never had a failure with it.



Bill, that last pic makes it look like you have a blinker fluid reservoir ;-)


You turn that on when you have to take a piss on the track, it lets people behind you know that they should move over.

Posted on: 2014/4/22 20:44
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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Stripping the interior:

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Posted on: 2014/4/24 15:24
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BrianCunningham Re: 2004 Corvette Z06 Road Race car build
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Going to be a nice ride when you're done
Posted on: 2014/4/24 21:21
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Matatk Re: 2004 Corvette Z06 Road Race car build
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So is it fast? How does it drive?
Posted on: 2014/4/24 22:26
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BillH Re: 2004 Corvette Z06 Road Race car build
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Quote:

Matatk wrote:
So is it fast?


Depends on who's driving.
Posted on: 2014/4/25 13:49
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BillH Re: 2004 Corvette Z06 Road Race car build
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Looks good Jon.

I don't envy you all that work though.

I prefer my cars pre-stripped.


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Posted on: 2014/4/25 13:52
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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But I needed power memory seats...
Posted on: 2014/4/25 17:51
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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As always, interior wiring was a nightmare. The chassis (and BCM) are 2002. The Engine harness was a 2004. The car was an engine fire donor so the factory harness was burned up.

I had a PCM cracked last year when I tuned the C4 with the LS2 in it. The tuner was gracious enough to give me a tune for a 2002 Z06 without security, O2's, etc. so I could at least run the car on and off the trailer.

Well it turns out GM changed the PCM and the connectors in 2003 1/2 due to new emissions requirements. Ugh. I had to either pull the harness or get a new PCM. Luckily, nobody wants the 2004 PCM becuase of the single year existance, so they are cheap.

The same tuner was kind enough to crack that computer for me, too so I could move on with my life.

OF course, I still coulnd't get the car to turn over due to several missing switches...

I designed an ingenious (patent pending) clutch switch mechanism to allow me to fire up the car:


Attach file:



jpg  IMG_0560.JPG (0.00 KB)

Posted on: 2014/4/25 17:55
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bogus Re: 2004 Corvette Z06 Road Race car build
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don't ya hate one off's like that?
Posted on: 2014/4/25 17:57
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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So now it's midnight on a Friday night, while all the normal people are out having beers or at home asleep. I resolve the long list of wiring problems and decide it's time to fire up the engine for the first time. (Plus I wanted to hear the glorious open header sounds of an LS6.)

I found a gas station open late, filled up a can, and dumped it into the dry tank. Then cranked the engine for about five seconds and got nothing. Once I stopped cranking I heard a LOT of fluid dumping onto the shop floor. That can't be good...

Turns out the fuel line was punctured and I had pumped about three gallons of gasoline all over the floor. It's a good thing I have the foresight to keep a fire extinguisher handy on a new build!

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jpg  IMG_0566.JPG (0.00 KB)

Posted on: 2014/4/25 18:29
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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I located a C5 fuel line locally and ran out to get it. Feeding that twisted mess of tube through the car with the engine in place is not an easy endeavour. Once I get it all routed I learned something else about 2004 Corvettes: the fuel line is different. GM moved the fuel filter into the tank instead of outside along the frame rail. My new fuel line was too short.

Back to Summit for another round of hoses and fittings...

Built a new fuel supply line:

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I had limited time that day to get it installed so I skipped the "disconnect the battery" step. Not smart when working with fuel. Or worse, SS hose. When I crawled under the car to pull the line through, the coiled hose up top slid down against the alternator "hot" line and cooked. More profanity followed.


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So Summit got another, strangely similar, order. What's amazing is that I ordered another 10 feet of hose at 9pm that night and it arrived at my house the NEXT day with no expedidted shipping cost. Simply awesome.

Posted on: 2014/4/25 18:51
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SpectatorRacing Re: 2004 Corvette Z06 Road Race car build
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I am not sure if there is a filter in the tank or not, so to be safe I added an inline filter externally. Finding the fitting that would allow me to attach stock GM 3/8" fuel line to 6AN was not easy.

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This lead to a magical moment when the car could maintain fuel pressure while keeping the floor dry.


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Posted on: 2014/4/25 18:59
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BillH Re: 2004 Corvette Z06 Road Race car build
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I installed a complete new fire system today in 3 hours, new bottle, pull cable, ran all new tubing and put a double nozzle setup in the engine compartment.

Tomorrow, I'm setting up the new Formula Atlantic, this car is going to scream.
Posted on: 2014/4/25 23:43
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