John Callahan added the ZR1’s...
John Callahan added the ZR1’s looks to his C6, thanks to factory GM carbon-fiber ZR1 body panels.
“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!
Jeff Bong’s paintwork on the...
Jeff Bong’s paintwork on the ZR1 bits (as well as on the factory doors and hatch) is incredible.
Filling the fenderwells are...
Filling the fenderwells are 20-inch D2 Forged VS1s on Nitto Invos.
For now, a B&M shifter, a...
For now, a B&M shifter, a Pioneer audio/video system, and carbon-fiber accents make up the interior mods, but a Down South Vettes cabin makeover is in the works.
| Spec Sheet: ’07 Coupe |
| Owner | John Callahan; Allentown, Pennsylvania |
| Block | Stock LS2 aluminum |
| Displacement | 364 ci |
| Compression Ratio | 10.9:1 |
| Heads | Stock LS2 aluminum |
| Valves | Stock 2.00/1.55 |
| Camshaft | Stock hydraulic roller |
| Rocker Arms | Stock 1.7 ratio |
| Pistons | Stock hypereutectic |
| Crankshaft | Stock nodular iron |
| Rods | Stock cast |
| Intake Manifold | Ported stock |
| Power Adder | Paxton NOVI 1200 supercharger with ECS methanol kit, 13 psi boost (max) |
| Fuel Injectors | 60-lb/hr |
| Fuel Pump | Stock with Kenne Bell Boost-a-Pump |
| Ignition | Stock coil-on-plug |
| Exhaust System | 1 3/4-in American Racing headers, Billy Boat “Bullet” exhaust |
| Transmission | Stock six-speed manual |
| Clutch | Stock |
| Driveshaft | Stock |
| Suspension | Stock Z51 |
| Rearend | Stock with 3.42 gears |
| Brakes | Stock Z51 with nickel-plated rotors and red powdercoated calipers |
| Wheels | D2 Forged VS1 chrome; 20x10-in front, 20x12.5-in rear |
| Tires | Nitto Invo; 285/25ZR20 front, 345/25ZR10 rear |
| Fuel Octane | 93 |
| Weight | 3,300 lbs with driver |
| Best ET/MPH | 11.96 sec at 119 mph (NA) |
| Best 60-ft. Time | 1.70 sec |
| Current Mileage | About 20,000 |