This listing is for a Vorshlag built dual-purpose track/street car C6 Corvette which we purchased new in March 2021 and put up for sale in Fall 2023.
On this car we tested and developed numerous parts including: MCS RR2 coilovers, 3 different brake systems, five sets of wheels, 2 ABS swaps, multiple brake cooling configurations, safety gear, tow hooks, power adding parts, and more. This car we called #ProjectNewBalance helped us develop new solutions with produicts we made as well as those from various partners. We campaigned this car in SCCA Time Trial (Tuner 2 class), Optima Ultimate Street Car events, SCCA autocross and Time trial, with a high win rate. After 18 months of ownership, in October 2019 we wrapped up the 2nd season of testing in this car, began de-stickering and detailing the car, and installed what we felt was the best combination of suspension parts, wheels/tires, power upgrades, and brakes to make this car appealing to most buyers. Please check the listing below for details of what this car comes with, but in short: this is street legal and track ready, with a perfect exterior, interior, and very low miles. "Only driven on weekends" for the last 18 months, but more than capable of being daily driven, too.
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| details |
Price: 42,500
Miles: 46,619 Title: Clear Texas title
VIN: 1G1YY25U065116175
Engine: 6.0L LS2 441 whp / 415 wtq
Drivetrain: Tremec T56 6-speed manual, 3.42 gearing
Colors:Silver exterior, Black interior
Mods: MCS RR2 remote double adj coilovers, LGM bars, track alignment, 19x10" FlowOne wheels, Hankook 275/35R18 RS4 tires,
6/4 pisotn Z06 brakes, Mk60 ABS, brake cooling, LGM long tube headers + carbon CAI, CNC ported heads, Comp Cam, FAST LSXR 102 intake,
103mm Nick Williams throttle body, custom tune, 3" Z06 exhaust with cats and manual bypass switch, tow hooks,
Corbeau heated seats, oil cooler, power steering cooler, deWitt aluminum radiator, ready for the track!
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| exterior and interior pics |
This section details the exterior and interior mods and pictures.
EXTERIOR - There is only one visible change on the exterior, a carbon fiber front splitter lip - which we modified for to allow for more brake cooling (more on that in the brake section, below. The paint is in excellent shape - this car was literally only driven on the weekends and stored indoors in between events. Painted in factory "Race Red" paint with only very small signs of use. The windshield is brand new.
The previous owner also kept this car in a garage but they managed to add some scratches to the bodywork. Wanting to make the exterior as close to perfect for the sale, we had 70% of the exterior surfaces preped and painted in March 2023 by our friends at Heritage Collision. Since then the Corvette has been stored indoors under a soft car cover. Every picture on this page can be clicked for a higher resolution image.
There is only one visible modifications to the exterior start with a carbon fiber front splitter lip - which we modified for to allow for better brake cooling (more on that in the brake section, below.
We also utilized this car for developing our Vorshlag C6 steel frame front and rear tow hook products. These are suitable for trackside extractions as well as pulling the car into an enclosed trailer. Everything else is exactly like it came from the factory.
INTERIOR - The interior is in flawless condition, with a full detail of the interior in May 2023 in preparation for this sale. There are some tasteful and modern modifications to the interior, which included the dual USB port / volt meter and ABS light in the factory ash tray panel. A $300 Safecraft fire extingushier on a billet aluminum quick relerase mount was added just ahead of the passenger seat base. There is also a 2-position seat heater control for the Corbeau driver's seat. A PanaVise 4-bolt RAM mount adapter bracket was added, which slides between an interior panel and the radio (and is removable). This has a 1" ball RAM mount added - which can be used for a phone holder or lap timer mount. The rest is all stock and works perfectly - the digital/analog dash, the climate control air conditioning blows ice cold air, radio, and all controls.
One of the worst track deficiencies in the C6 Corvette - even the ZR1 and Z06 - are the factory seats. They are flat, soft, and do NOT work well holding the occupants in place when on track. The factory front seats were removed shortly after purchasing this car and replaced with Corbeau Sportline RRS seats, ordered in black with white stitching. The driver's side has an optional seat heater with 2 heat levels. These seats are far nicer and more comfortable than the OEM C6 seats, with proper bolstering and pass-thrus for shoulder harnesses. That makes for a rare combination of track worthiness and street comfort, with no compromises.
We spent considerable time and effort designing the seat mounting base brackets for this chassis and these seats, to maximize headroom and set the proper base tilt angle. We added Safecraft 6-point FIA harnesses with lap and anti-submarine belt mounting anchors into the seat bases, which have passed technical inspection for 3 track groups. A Brey-Krause harness bar was added that holds the shoulder harnesses, and it was installed with perfection - it looks like a factory installed option. We spent $4000 in parts and labor on these interior upgrades.
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| suspension, brakes, power, exhaust, cooling mods, wheels and tires |
This section shows the current suspension, brake and power upgrades that have been added to this Corvette.
 This Corvette handles very neutral on track and still rides great on the street with the MCS monotube double adjustable coilovers
SUSPENSION - We took this bone stock C6 Coupe and transformed the handling with a number of major suspension upgrades, to be fast on track / autocross yet easy to drive. We did all of this with the goal of also not ruining the street ride quality. After we sorted the suspension we ran a full season of SCCA Time Trial in Tuner 2 class, winning 4 of 5 events and securing the class championship. We also ran the car in SCCA Autocrossing in CAM-S class and took 1-2 on the first outing, with zero changes to the road course setup. The MCS remote reservoir double adjustable coilovers are world class monotube dampers that price amazing performance, good ride, and top notch durability.
We substituted the front and rear transverse leaf springs that came on this car to utilized Hyperco coilover springs in 650 #/in front and 700 #/in rear rates. This $6200 MCS coilover kit is both street worthy and track capable, with both compression adjustment on the remote reservoirs and rebound adjustments on the dampers, to alter damping for each track situation - or street use. The dampers are using Vorshlag spherical top mounts at both ends and custom aluminum reservoir brackets for all four corners. New LG "G2" swaybars were added at both ends with custom grease zerk mounting and adjustable endlinks. We also replaced all of the factory rubber bushings with polyurethane, and every single bushing has a drilled and tapped grease zerk fitting to allow grease to be added (annually) to the inner sleeve. This removes any noise or "sticktion", and will help these bushings outlast the car. We also added new tie rods, high temp ball joint and tie rod boots, stainless steel heat shields to all bushings near brake rotors, new ball joints, and all moving parts in the suspension. Long story short - the $12,000+ spent in suspension maintenance and upgrades make for a world class track capable and street friendly setup.
The alignment specs above achieved with custom CNC machined "lockout slugs" Vorshlag built that replace the factory eccentric bolts for the lower control arm mounts at both ends of the car. These lockouts prevent the eccentrics from slipping under hard lateral loads, giving the Corvette -3.3° front and -2.6° rear camber. These alignment settings are agressive, but have proven to be excellent on track with regards to grip, handling balance, and tire wear. This setup was perfected over a year of track competitions and multiple alignment sessions.
After the last alignment the car was corner balanced on our 4 corner digital scales, with driver weight in the seat. The final weight of the C6 (3117 lbs) is shown on the 19x10" wheels / 275mm Hankook RS4 tires, and with the coilovers and other upgrades installed. This is lighter than most similarly equipped aluminum framed C6 Z06/ZR1 models with their carbon front fenders.
BRAKE SYSTEM UPGRADE - This C6 came from the factory with small rotors and 2 piston calipers that also came on the C5 Corvette. The ABS system wasn't functioning in any reasonable manner, and we had to start over from scratch. We upgraded first to the Z51 brakes, then later to the C6 Z06 brakes - with the 14" diameter rotors and 6 piston front calipers + 4 piston rears shown. We also completely swapped the ABS system to a popular Bosch Mk60 unit, which was an immense amount of work - but our test data proved that was worthwhile. This car was then used as a test mule for our front brake cooling solution for the C6 chassis, and that last change transformed the car. These many changes - the rotors / calipers, the ABS swap, proper track pads, and then the brake cooling - make for a rock solid, track worthy braking system.
The brake setup includes new "smooth" 14" Z06 rotors, Z06 6-piston front calipers, Vorshlag brake cooling, and Hawk DTC-70 pads + 4 piston Z06 brakes out back
We converted this car from the "JL9" factory brake package to the "J56" Z06 brakes with new Centric rotors, 6-piston front calipers with stainless steel pistons, 4 piston rear calipers and rotors. A new AC Delco J56 "Z06" master cylinder was also added. The system uses Motul RBF600 fluid and stainless steel braided lines. There are new Hawk DTC-70 pads front and rear. These brake upgrades and modifications top $3500 in parts and labor.
The pictures above show parts and steps taken to convert this C6 to a Bosch Mk60 ABS - am upgrade which costs over $7000 in parts in labor. This included a Mk60 ABS hydraulic unit, a new wiring harness from Racing Harness Technologies, the proper pressure sensors, the yaw sensor (mounted under the radio), and all of the power wiring and brake pedal switch to actuate the system. Later model "passive" wheel speed sensors were added at all 4 corners, with 33 spline SKF "X-tracker" units added up front, with ARP 3.5" wheel studs added at each corner. We mounted the Mk60 unit under the left front fender on an aluminum bracket we built, with bushings to isolate the vibrations from high frequency cycling on the hydraulic unit. There is an ABS trouble light LED added at the center section of the dash, near the shifter. We utilized multiple ABS tests and programming to dial in this system to perfection.
We developed our production Vorshlag C6 front brake cooling deflector kit to this car, which was track tested and perfected over 4 revisions. These work in concert with front brake inlet ducting we custom built for this car, which capture air from under the carbon fiber front splitter lip to direct air towards the deflectors, which then redirected this cooling air to the front hubs and rotors. The air hitting the inside of the rotors is pumped out through the cooling vanes to cool the frpnt rotors and pads.
POWER UPGRADES - The 2006 Corvette Coupe came with a Gen III 6.0L LS2 V8, which is rated at 400 whp in stock form. We dyno tested this at 360 whp when we bought the car, then added 80 horsepower to that with modifications that are detailed below - it currently makes 441 whp SAE, as shown in the dyno graph (nearly identical to the 7.0L LS7's power output), and it sounds very mild with no choppy cam or loud exhaust note.
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The engine and everything else under the hood is clean enough to eat off of. words words words words words words words words words words words words words words words words words words words words words words
On September 2, 2023 we verified the final tuning and power levels on the dyno at LG Motorsports. The dyno numbers can be seen above and the video is in the second thumbnail below.
Above you can see the last dyno check-up done in September, as well as a new Nick Williams 103mm drive-by-wire throttle body added the day before the dyno. We had "borrowed" the original 103mm TB from this car for another project, as these were out of stock for several weeks. When that went in we also vacuum filled the cooling system and checked all other fluids for the final time - and the car worked flawlessly on the dyno, making several pulls with very consistent numbers.
CUSTOM EXHAUST WORK - This C6 is one of the quietest cars you will see that makes 440 whp. This was something we achieved with careful selection of parts, Z06 rear mufflers, and a manual muffler bypass system. The exhaust note sounds very mild, with no loud exhaust note.
At Vorshlag we are fans of high flowing exhaust but not needlessly LOUD sound levels. This emissions legal system with long tube headers, the Z06 mufflers, and LGM high flow catalysts makes for the perfect compromise exhaust, for an enthusieast who has outgrown the "Look at Me!" ultra loud modified cars. You could drive granny to church in this Corvette and not ruffle any feathers.
Adding these larger Z06 mufflers but keepign the functional bypass valves in place, then closing those valves, radically reduced the loud, raspy exhaust tone that you normally hear from most modified Corvettes. It idles at 700 rpm but can pull safely past 7000 rpm with the upgraded valvetrain and ported cylinder heads. If you ever run at a "sound restricted" site and are pushign the dB limits, you could always close these muffler bypass valves and meet even the most stringent of sound standards. It is also a real joy when driving on the street, as the exhaust isn't blasting your ear drumes with drone or unneccessary noises. And sure, if you want to wake the neighbors, just flip that siwtch.
COOLING MODS - There are a number of updates we have done to this car that make it more appropriate for road course "track events". Most of the parts development we did on the S550 chassis is still included on the final version, which is detailed below.
The above images show the current 3 gauge setup we added. These are using full sweep electronic gauges which have various back lighting options, color change for alarms, etc. These include 2-1/6" diameter oil pressure, oil temperature, and trans fluid temperature gauges - all mounted in a "Boss 302" Ford Racing gauge pod, which looks at home in this car. The sensors for the oil temp and pressure come from the Mishimoto oil filter sandwich plate and the trans temp sensor is mounted in place of the drain plug, as shown.
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The oil cooler words words words words words words words words words words words words
WHEELS AND TIRES -
Last but not least are the wheels and tires we added. This C6 camer with 17 x 8" front wheels and 18x9.5" rear wheels with some pretty terrible tires. ........words words words words words words words words words words words words words words words
We have ammassed FIVE sets of wheels and tires for this C6, and the two sets shown above will come with this car, but the other 3 sets will be avilable to the buyer before they are sold separately - after the C6 sells.
The optional set of Jonebloed 3-piece custom ordered wheels above are the most expensive ($4400 new!) but offer the most performance advantage on track or for autocross. These red wheels are 18x11" in front and 18x12" out back, and require a specific set of spacers to fit onto this car. We had the best results with these wheels using Yokohama A052 tires in 315/30R18 at all 4 corners. All of our SCCA T2 classed Time Trial and CAM-S autocross wins happened on this wheel and tire setup. It is unique to this narrow body C6 and won't likely fit anything else, but if this set doesn't sell we will reconfigure the barrels to use on another project. These wheels are VERY light and look amazing on this car
Another optional set of wheels shown above are a black set of the same flow formed 19x10" FlowOne wheels as the silver set, but these come with a set of 295/35R19 Hoosier R7 DOT race tires. These were utilized at two non-SCCA Time Trials (Apex and NASA) and are still in excellent shape. This tire takes 2-3 laps to come up to temp but then works consistently for many laps after that (we ran our 11 lap brake cooling test on these tires). These are the easiest to fit of all of the optional wheels, as they are identical to the silver 19x10" /275mm Hankook tire set we are including with the car.
The optional set of Jonebloed 3-piece custom ordered wheels above are the most expensive ($4400 new!) but offer the most performance advantage on track or for autocross. These red wheels are 18x11" in front and 18x12" out back, and require a specific set of spacers to fit onto this car. We had the best results with these wheels using Yokohama A052 tires in 315/30R18 at all 4 corners. All of our SCCA T2 classed Time Trial and CAM-S autocross wins happened on this wheel and tire setup. It is unique to this narrow body C6 and won't likely fit anything else, but if this set doesn't sell we will reconfigure the barrels to use on another project. These wheels are VERY light and look amazing on this car
The last optional set of wheels shown above are a a brand new set of OZ wheels in 18x11" sizes that fit this narrow body Corvette. We searched for an 18x11" size that had the right offset, and found two black and two gold wheels and bought them. Then when they arrived we realized that these needed a slightly larger hub bore opening, so we machined all 4 of these on our 4 axis CNC mill. They are otherwise brand new and have never had a set of tires mounted to them, and cost $550/each new. There is no set of tires that come witht this set, but they would likley be ideal for a set of 295-315mm tires in 18" diameter.
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| contact info |
This Corvette is for sale and looking for the right home!
This is the Corvette cornering hard with the 19 x 10" wheels, 295mm Hoosier R7 tires, and MCS coilovers at a NASA Time Trial event in TT3 class
It has $30K worth of parts and labor relating to the exhaust work, suspension, brake upgrades, coolers, wheels and tires, seats, harnesses, and other upgrades we have done. On this low mileage, exceptionally clean car we feel the the price listed is more than fair. The car has 46K miles and looks immaculate - inside, out, and underhood. The power upgrades have added 80 hp over stock without ruining the drive-ability of the original design, and with a flip of the switch it is quiet as a church mouse. Change the wheels/tires and turns some damper knobs, head to the track, and you can embarrass GT3s and other exotics.
We have priced this well sorted, very clean, track prepped 2006 Corvette at $42,500. While you might find one for less, all of those cars will have deferred manitenance and probably some "upgrades" that ruin the car's ride, driving feel, handling, or stopping power. If someone brought us a similar 2005-07 Corvette that was stock and perfect, we could not replicate this work and end result again for under $30K in parts and labor, on top of the price of the starting car. This car can be daily driven, is faster than a C8 on track, yet will have a significantly lower insurance and running costs.
This ad will stay active until the Corvette sells. Feel free to call us (972-422-7170) or email (sales@vorshlag.com) with any questions about the car. With an appointment, you can view the car at the Vorshlag Motorsports facility.
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