Mark Rife on OUSCI

“At SEMA, Optima wanted me in, and Bret [Voelkel] at RideTech lobbied to get me in too. The car had what they were looking for. But on track, the car didn’t feel good at all. It had a lot of rear brake bias since it was set up for autocross. I thought we had set [the brake bias] back, and we really turned the rear brake bias up instead of down! I ended up spinning it once at Optima. The cars they thought would do well, they would put a chase race car behind you with a camera. They had a chase car behind me filming, but I spun out and they stopped following me. When the rear tried to swap ends on the corner, it spun out. Other than that, the car handled excellent. They don’t give you any test time—you’ve got to be ready when you get there!”

By The Numbers

1963 Chevy Corvette

Mark Rife, 62 • Carolina Beach, NC


Type: 427ci LS7

Block: GMPP, cast aluminum with pressed-in steel sleeves

Bore x stroke: 4.125 x 4.00

Rotating assembly: forged steel crank, forged titanium rods, cast-aluminum pistons

Compression ratio: 11.0:1

Cylinder heads: stock GMPP LS7, CNC-ported aluminum, rectangular port, 70cc chambers

Camshaft: stock hydraulic roller GMPP LS7, .591-inch lift, 211/230 degrees duration at .050-inch lift

Valvetrain: stock LS7, 2.20-/1.61-inch valves, 1.8:1 roller rocker arms

Induction: stock LS7, injection-molded nylon polymer cross-ram

Oiling: stock LS7, dry-sump

Exhaust: Stainless Works; 1⅞-inch stainless steel long-tube headers, dual 3-inch exhaust

Fuel system: stock LS7/Z06 Corvette

Engine management: stock LS7 Corvette Z06

Ignition: stock LS7 coil-on-plug

Cooling: stock LS7 water pump, custom Griffin aluminum radiator

Output: 454 rear-wheel horsepower at 7,200 rpm

Engine built by: GMPP


Transmission: Tremec five-speed manual transmission with Quartermaster clutch

Rearend: stock ’96 Corvette Dana 44, narrowed 2 inches, posi carrier with 3.73 ring-and-pinion


Frame: Street Shop (Athens, AL) C2 bolt-in chassis for use with C4 suspension components

Front suspension: stock C4 Corvette with Mustang II rack-and-pinion, RideTech triple-adjustable coilover shocks, RideTech-spec Hyperco springs

Rear suspension: stock C4 Corvette, RideTech triple-adjustable coilover shocks with RideTech-spec Hyperco springs, transverse spring delete

Brakes: Wilwood; 13-inch rotors with six-piston calipers, front; 14-inch C5 rotors with 4-inch pistons, rear

Wheels & Tires

Wheels: Team III; 11x17 (front), 12x17 (rear)

Tires: Kumho; 315/35R17 (front), 335/35R17 (rear)