The factory LS3 produces 426 hp and 420 lb-ft of torque. Hennessey leans on it with an Eaton TVS2300 supercharger system that produces 7-8 psi. It draws air from an HPE intake and feeds LS3 cylinder heads that have been ported, polished, and set with upgraded valvesprings. The HPE camshaft specs are proprietary but its main functions are to shorten the overlap time and keep cylinder pressure from being siphoned off to deliver crisp throttle response and all-around driveability. Fuel is processed through LS9 injectors under the auspice of the HPE engine management calibration. The exhaust is more or less seamless: stainless steel long-tube headers (17/8-inch primaries) merge with custom catalytic converters (from Kook’s or American Racing Headers), crossover pipe, and 3-inch diameter tract. The package comes with a 12/12,000 limited warranty. With so much grunt ready to tear and shred, HPE inserts a Centerforce 12-inch clutch assembly and flywheel. The Tremec TR6060 six-speed sends torque to
In the Cup
View the Hennessey cars as outright mechanical extensions rather than complete full-on conversions (heavy interior changes are not usually included). But the standard Camaro interior is driver-friendly and really needs nothing else to qualify it for such a mission. Aside from the short-throw shifter buried deep in its boot, the interior becomes a subdued mini-billboard for the builder with embellishments that include a serial-numbered dash plate (engine, too), Hennessey embroidered headrests, and premium floor mats.
Bones and Bars
Since the Camaro platform is so well built in the first place, the suspension needn’t be earth shattering. No, but after changing out the original suspension members for KW Variant 1 adjustable coilovers, inserting poly bushings where rubber once was, and paying close attention to unsprung weight, the Camaro is more than ready for 650 hp. Remember, you’re going to drive this piece, not beat the snot out of it every time you turn a corner.
The Summit White was given contrasting hockey stick stripes as well as the CarbonAero body kit, featuring front splitter, rear bumper diffuser, and rocker panels in carbon fiber. Hennessey says that the front aerodynamics begin working at less than 60 mph.
Rollers and Stoppers
The Camaro SS was built with superlative Brembo brakes, 14x4 pistons at the front, and 14.4x4 pistons at the rear that are compatible with the new power regimen. HPE three-piece forgings measure 20x9.5 and 12x10.5, and snuggle against 275/35 and 305/35 Pirelli P-Zero tires. CHP