“That’s because it turned out so good that I’m scared I’ll break something,” he says. “I really don’t want to beat it now.” Another reason: Having a car that quick takes the fun out of the track-day trips with his buddies who have stock (or close to it) Corvettes. (That, and needing to install a full rollcage if he runs a sub-11-second pass on many tracks.)

But that doesn’t mean he won’t air it out occasionally. “I’m going to run it someday, just to see what it can do, but I don’t know how soon,” Callahan says. “I know that I’m not going to be able to go all out. I have Drag Radials for it, but I don’t think that I’ll break anything with them on, because they’ll spin first.”

One place that Callahan took his Corvette was last year’s Corvettes at Carlisle show. That’s where Editor Heath saw it and made it his “Celebrity Choice” winner.

Not bad for a car inspired by a brother-in-law’s Corvette...and built in the owner’s garage!

Spec Sheet: ’07 Coupe
OwnerJohn Callahan; Allentown, Pennsylvania
BlockStock LS2 aluminum
Displacement364 ci
Compression Ratio10.9:1
HeadsStock LS2 aluminum
ValvesStock 2.00/1.55
CamshaftStock hydraulic roller
Rocker ArmsStock 1.7 ratio
PistonsStock hypereutectic
CrankshaftStock nodular iron
RodsStock cast
Intake ManifoldPorted stock
Power AdderPaxton NOVI 1200 supercharger with ECS methanol kit, 13 psi boost (max)
Fuel Injectors60-lb/hr
Fuel PumpStock with Kenne Bell Boost-a-Pump
IgnitionStock coil-on-plug
Exhaust System1 3/4-in American Racing headers, Billy Boat “Bullet” exhaust
TransmissionStock six-speed manual
ClutchStock
DriveshaftStock
SuspensionStock Z51
RearendStock with 3.42 gears
BrakesStock Z51 with nickel-plated rotors and red powdercoated calipers
WheelsD2 Forged VS1 chrome; 20x10-in front, 20x12.5-in rear
TiresNitto Invo; 285/25ZR20 front, 345/25ZR10 rear
Fuel Octane93
Weight3,300 lbs with driver
Best ET/MPH11.96 sec at 119 mph (NA)
Best 60-ft. Time1.70 sec
Current MileageAbout 20,000