Last week the world watched as Jared Cocanougher stepped up the all-time quickest stick-shift GM record. That might sound like a micro-record but when you are dealing with low 8-second cars, it is a big deal and super-impressive. Cocanougher unleashed a stellar 8.15 at 172 mph pass at Dragway 42 and sent the internet on fire. YouTube sensation Cleetus McFarland responded by going 8.10 at 178 mph and pushed the head gaskets out in the process. Two days later, the 7-second barrier fell when McFarland swapped the gaskets and ran 7.82 at 176 mph. Cocanougher, however, isn’t going quietly and plans on chasing down the record and recently clicked off an impressive 8.00 at an incredible 189 mph!
The C5 Corvette Z06 sports a nasty little LS engine that begins with an LSR engine block and the Supercharger Outlet knocked it out to 427ci with a Callies crankshaft, rods, and Diamond pistons. LJMS whittled out a hydraulic roller camshaft, which opens and closes the valves in a set of Trick Flow 245 heads, which were ported and polished by Brian Tooley Racing. A 417 Motorsports intake manifold with an air-to-water intercooler integrated into it. A ProCharger F-1X-12R supplies boost and Roberts Motor Works handled the fabrication to connect the blower to the throttle body, along with a lot of other fabrication. Handling the engine calibration is the job of a Haltech Elite 2500, which was tuned by ShorTuning.
Astute readers will recognize that the Vette still features the IRS suspension, making the task more difficult but Cocanougher seems to have it worked out. The car has been 1.40 sixty-foot, which is quick for a stick-shift setup in this type of application. The IRS is enhanced with an undisclosed set of double adjustable shocks. Moving to the drivetrain, RPM Transmissions supplied a C6 ZR1 rear with a 3.90:1 gear ratio. The company also face-plated a TREMEC T-56 and added G-Force gear-set. Cocanougher uses a multi-disc Mantic clutch to transfer the power from the engine to the TREMEC.
Cocanougher feels the Vette can go 7.70s as the car sits right now and once he accomplishes that goal, Nitrous Outlet just shipped a dry nitrous system to help push the record even further into the 7s.