2014 – 2016 Chevrolet Corvette C7 Stingray HPE650 Upgrade

2015 Hennessey Chevrolet Corvette C7 Stingray

HPE650 Naturally Aspirated Engine Upgrade

2014 – 2016 Chevrolet Corvette C7 Stingray.
The HPE650 engine upgrade is compatible with both the factory automatic and manual transmissions.

• 661 bhp @ 6,800 rpm *
• 605 lb-ft torque @ 4,200 rpm *


• 0-60 mph: 3.3 sec.
• 1/4 mile: 11.3 sec. @ 128 mph
• Top speed: 198 mph


• 416 CID Stroker motor.
• 4.0-inch Stroker crankshaft.
• Custom forged aluminum pistons with 11.5:1 compression ratio.
• Forged steel wrist pins.
• 6.125-inch Billet steel H-beam connecting rods with ARP bolts.
• Balance, blueprint & assemble shortblock:  fully de-bur block, line hone block with ARP main studs, deck block.
• Bore block on 3-axis CNC mill, hone block with torque plates, balance crankshaft, check bearing clearances.
• Assemble shortblock.
• CNC Ported Cylinder Heads ports- Competition valve job, extensive flow testing, chambers milled to desired cc.
• Lightweight hollow stem intake valves, exhaust valves.
• Extreme duty dual valve springs.
• Titanium retainers, machined locators & locks, GM valve seals.
• Chamber volumes measures & adjusted for compression.
• CNC work hand blended into valve job, spring pressures measured & adjusted.
• HPE hydraulic roller camshaft upgrade.
• Hydraulic lifter upgrade.
• Extreme duty pushrod upgrade.
• 1.75 inch stainless steel long-tube headers.
• Stainless steel mid-pipe exhaust upgrade.
• High-flow catalytic converters.
• HPE engine management upgrade & chassis dyno calibration.
• Professional installation and all necessary gaskets & fluids.
• Chassis dyno testing.  You’ll receive a before & after dyno graph report showing power and torque measured at the rear wheels.
• Road testing (up to 100 miles).
• Hennessey exterior badge (rear).
• HPE650 Powered by Hennessey badges (side & rear).
• Hennessey serial numbered plaque signed by John Hennessey (interior).
• Hennessey serial numbered plaque signed by the HPE technician (engine bay).
• Powered by Hennessey premium floor mats.
• Serial numbered Certificate of Authenticity personally signed by John Hennessey.
• Free lifetime membership in the official Hennessey Vehicle Registry (HVR).
• 3 Year / 36,000 mile limited warranty.
• Half of a tank of Shell V-Power 93 octane gasoline.
• Pennzoil Ultra Platinum synthetic oil & filter change.
Contact us for pricing and turnaround time details.


* Estimated power ratings at the engine.  Actual power will be measured at the rear wheels, before and after the upgrades are installed and tuned.  Rear wheel horsepower and torque figures are approximately 15-20% lower than the factory published power figures which are measured at the crankshaft on an engine dyno.

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