LS3 BRZ

[GrabTheWheel]

Originally Posted by GrandSport

Big heavy powerful cars cost a lot to run. These were brand new tires with 100 highway miles on them when I started my track day Sunday. I did 4 x 25 min sessions. (probably averaged 18-20min per session).


About 1/16th. Maybe 2 at most. $1600 mounted and balanced. And I'm running "cheap" 18" tires. They're street tires, too- not even slicks.



Anyway, Corvettes are kind of funny in their depreciation. The first 20k miles are insane. Then it's like nothing until 70k. I mentioned earlier, I got then current generation C6 Z51 (not even GS which hold value way better) with 14k for $34k or so (nearly $65k sticker!). I drove it for 60k miles and sold it with 75k miles for $24k. And I bought from a dealer, so it's even less if you compare private to private sales.



C6 Z06 is close. 3100lbs and 505 hp. You can easily get a C6 to sub 3000lbs and not even notice the daily driving difference. That's why the C6 widebody and C5Z06 are such great track cars. It's also why a 20 year old Corvette with 50k miles is $24,000

Can't argue with you there! C6 Z06 and ZR1 are unbeatable track cars for the money and they don't require an extra 10K spent on cooling like the C7 Z06. I guess for me it's not just about weight but also about the physical dimensions of the car. I really want to put a hurting on all the caymans at my local autoX and a larger car regardless of weight makes that more difficult.

[spitsnaugle]

Any updates on the build with PureAutomotive?

[GrabTheWheel]

Originally Posted by spitsnaugle

Any updates on the build with PureAutomotive?

Yes, thanks for asking Joel! Fresh motor is back from the machine shop and should be going in the car any day now. I'm actually going to be in the DC area over the weekend for an event so I'm going to stop by Pure in Maryland while I'm there to check out their shop and the progress thus far. Here are some pics Brady sent me, I'm gonna have him add to this thread for anyone who's interested.

Debating between driving the car back myself and shipping it. I've heard a lot of horror stories lately when it comes to shipping cars so I'm tempted to make the long drive across the country. Getting it shipped out there was a real PITA, if anyone has a carrier suggestion I'm all ears?

My wife is convinced the car will breakdown and not make it all the way home. Might have to do the drive JUST to prove her wrong...

Here's the specs on the mild cam we went with. I didn't want a crazy amount of chop. I also ordered that 3.73 ring and pinion for the rear end.

Duration at .050": 227/237
113 Lobe Center Angle with a 109.5 Intake Centerline
Lift with 1.7 Rocker Arm Ratio: .621"/.604"

[Colin86]

Build looks awesome, thanks for sharing. What made you go with the 3.73 and not the slightly taller 3.58 rear end?

[GrabTheWheel]

Originally Posted by Colin86

Build looks awesome, thanks for sharing. What made you go with the 3.73 and not the slightly taller 3.58 rear end?

Engine will rev to 7K with 2.66 1st gear ratio. Top of 2nd gear should be good for 78 MPH which means no need to shift into 3rd for AutoX and 4th gear will be good for 140mph which means no need for 5th gear on most tracks. This was all I cared about, didn't see a need to go taller.

I used this tremec calculator http://tremec.com/calculadora.php

I was able to find a brand new ring and pinion from these guys, no need to hunt for a used rear end.

https://www.justdifferentials.com/se...C-STV6&Submit=

[spitsnaugle]

Originally Posted by GrabTheWheel

Engine will rev to 7K with 2.66 1st gear ratio. Top of 2nd gear should be good for 78 MPH which means no need to shift into 3rd for AutoX and 4th gear will be good for 140mph which means no need for 5th gear on most tracks. This was all I cared about, didn't see a need to go taller.

I used this tremec calculator http://tremec.com/calculadora.php

I was able to find a brand new ring and pinion from these guys, no need to hunt for a used rear end.

https://www.justdifferentials.com/se...C-STV6&Submit=

super updates! Look like a real badass engine.

road trip seems like a perfect break-in test

pretty sure you'll need a 29 spline flange with that gear BTW.

[GrabTheWheel]

Originally Posted by spitsnaugle

super updates! Look like a real badass engine.

road trip seems like a perfect break-in test

pretty sure you'll need a 29 spline flange with that gear BTW.

Thanks, that was ordered as well. Got a giant pile of parts waiting to go on the car. Things should start to move pretty quickly once the engine is in. I'm told it will be finished by the end of the month. Thanks again for the MoTeC Joel!

[Colin86]

Originally Posted by GrabTheWheel

Engine will rev to 7K with 2.66 1st gear ratio. Top of 2nd gear should be good for 78 MPH which means no need to shift into 3rd for AutoX and 4th gear will be good for 140mph which means no need for 5th gear on most tracks. This was all I cared about, didn't see a need to go taller.

I used this tremec calculator http://tremec.com/calculadora.php

I was able to find a brand new ring and pinion from these guys, no need to hunt for a used rear end.

https://www.justdifferentials.com/se...C-STV6&Submit=

Makes complete sense, I was asleep at the keyboard and didn't consider you weren't running the stock transmission.

[GrabTheWheel]

Motor is in! Unfortunately there has been a slight setback because of the transmission. Apparently you cannot use an off the shelf magnum XL trans from Tremec with the Vorshlag mounts. You need a magnum XL trans for a GM but with a Ford input shaft. I'm now waiting for another trans...

Here's what went into the motor.
Cam, Push Rods, Timing Set, Cam bolts, Clean and Deck Heads, Pressure Test Heads, Modify Oil returns
Comp Cams High Revving Shaft Mounted Rocker Upgrade
Diamond Pistons, Callies Rods, King Racing Coated Bearings, Head Gaskets, Timing Gasket, ARP head Studs, Main Studs
Deck block, hot tank, polish crank, bore and hone for new pistons

[VR4EVER]

It's gonna be a beast!

[GrabTheWheel]

https://drive.google.com/file/d/1Gev...ew?usp=sharing

Exhaust looks pretty awesome! Things are coming together... Debating whether or not to add an Accusump setup. If anyone on here has experience with one let me know.

[spitsnaugle]

Originally Posted by GrabTheWheel

https://drive.google.com/file/d/1Gev...ew?usp=sharing

Exhaust looks pretty awesome! Things are coming together... Debating whether or not to add an Accusump setup. If anyone on here has experience with one let me know.

Neat exhaust setup. What headers ya running?

[GrabTheWheel]

Originally Posted by spitsnaugle

Neat exhaust setup. What headers ya running?

Custom headers made by Pure. Not sure on the design but looks like there was plenty of room to work with. Driveshaft is being made right now I believe.

[spitsnaugle]

Originally Posted by GrabTheWheel

Custom headers made by Pure. Not sure on the design but looks like there was plenty of room to work with. Driveshaft is being made right now I believe.

Dang, I'd love to see what they came up with. I'd love to get some proper long tubes on the car. I went with CX racing and they're just acceptable.

I've been in talks with Brady about Pure buying some of the recessed clutch master cylinder mounts I designed, but I get a reply from him about once every other week, he must be busy with your car!