1999 Chevrolet Camaro Z28 - Adrenaline

202 MPH in Josh Forster's 1,020HP, homebuilt, matte green, single-turbo, standing-mile, '99 Z28.

Justin Cesler Sep 19, 2012 0 Comment(s)
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"Two weeks before my third Mojave Mile race, I installed a meth injection kit from Painless, and a bigger Airaid air filter, and decided to get it retuned. We still couldn't get much more than 850 rwhp of it, and the boost pressure was becoming irregular. I called up Turbosmart and ordered a new e-Boost2 boost controller. The next week I came back to get it tuned again, and since Turbosmart was local, they actually came to the dyno shop to help set it up. With the help of Cunningham Motorsports and Turbosmart, we got it all tuned perfectly, and got the boost curve perfect, but it still wasn't making the power I wanted. We measured backpressure and realized it was through the roof. So with one week before the race, I set out to build a brand-new T6 flanged turbo kit. I had everything I needed overnighted, and spent every night that week up till 4 am changing the whole turbo system. When I took the turbo off, I realized that the bearings had too much play and that I wouldn't have time to get it rebuilt. I had the guys at Comp Turbo take a look at it, and they had me run the turbo since it wasn't too bad, and we wouldn't have time to order parts for it. I got the car all back together and went in that Thursday to get it tuned again. This time it made 1,020 rwhp on only 17 psi with 91-octane and a small shot of meth. It was more than I needed, so we set up the boost controller to have three stages: 750 rwhp, 850 rwhp, and kill mode of 1,020 rwhp. The next day I packed up all my supplies and headed out to Mojave."

With two full days of racing ahead of him and a Density Altitude of 4,000 feet, Josh knew it wasn't going to be easy to run the number. Day One was spent shaking down the all-new combination, tweaking the Camaro both aerodynamically and physically. On the second stage, which lays down 850 rwhp, Josh ran fast, trapping at 199.3 mph on his best effort. After several more runs, all just shy of 200 mph, it was time for Josh to put his big boy pants on. "It was getting hotter, so I quit wasting time and put it in kill mode: 1,020 rwhp. I could have easily called it quits until the wind died, but I wasn't about to give up." As the flagman waved Josh forward, the Camaro left slowly and began to accelerate down the mile. "The tires spun hard in every single gear, even shifting into fifth. The transmission had a hard time going into fourth, so that cost me a couple miles an hour. I had a momentary boost leak in the middle of the run, but something must have sealed up and everything was fine. I watched the needle quickly climb to around 200 mph on my gauges, and I crossed the finish, looked to the right, and from a mile away I could see my friends jumping up and down waving their arms." Josh knew he had done it, and when he got to the time station, he was rewarded with his 202.5-mph timeslip, making him the youngest person to enter the Mojave Mile 200 club, an elite group of racers (31 as of this writing) who have managed to break the elusive 200-mph barrier. "A lot of people told me that I wouldn't be able to hit 200, but I never let that stop me. And it feels even better to prove them wrong."

Car: 1999 Chevrolet Camaro Z28
Owner: Joshua Forster
Block: LQ4, 408ci
Compression ratio: 9.5:1
Heads: West Coast Cylinder Heads CNC-ported Edelbrock castings, 2.055 intake valves, 1.600 exhaust valves
Cam: Comp Cams hydraulic roller, 231/227 duration at .050, .617/.613-inch lift, 116 LSA
Rocker arms: Stock, 1.6-ratio
Pistons: Wiseco, forged
Rings: Wiseco
Crankshaft: Eagle, forged
Rods: Eagle H-beam, forged
Throttle body: Edelbrock 90mm
Fuel injectors: 83 lb/hr
Fuel pump: Walbro, twin in-tank
Ignition: Stock coil-near-plug, NGK plugs
Engine management: Stock, tuned by Cunningham Motorsports
Turbocharger: Comp Turbo 91mm GT91
Blow Off Valve: Turbosmart Race Port 50mm
Wastegate: Turbosmart Pro-Gate 50mm
Intercooler: CX Racing, air-to-air
Exhaust system: GM truck manifolds, custom 2.5-inch stainless steel hot-side, 4-inch downpipe
Transmission: T56, built by Anaheim Gear
Clutch: Centerforce DYAD twin-disc
Driveshaft: PST 3.5-inch, aluminum
Front suspension: QA1 coilovers, BMR Suspension K-member, stock upper and lower control arms, BMR 35mm sway bar
Rear suspension: Koni adjustable shocks, Hotchkis springs, BMR Suspension torque arm, lower control arms, subframe connectors, Panhard bar, and 25mm sway bar
Rear end: Moser 9-inch, 3.25 gear, Moser 35-spline axles, Wavetrak differential
Brakes: Brembo 4-piston front, stock rear
Wheels: C6 Z06 18x8.5 front, 18x10.5 rear
Front tires: Michelin Pilot Super Sport 275/35/18
Rear tires: Toyo Proxes R888 315/40/18
Fuel: 91-octane + Methanol
HP/TQ: 1,020/958
MPH: 202.5




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