With a wider stance, larger and stickier rubber and an available aerodynamics package, the Grand Sport takes standard Stingray power and wraps it up in a package that’s grippier and bit more easy to control.
Hennnessey Performance Engineering has now gone and undone all that grip in creating the Corvette Grand Sport HPE 1000, though. Not that we’re complaining about this supercharged beast.
HPE’s 1,000 hp upgrade kit for the C7 Corvette Grand Sport includes a a stroker kit that brings displacement to 416 cu. in (6.8-liters), a supercharger and intercooler, forged pistons, billet connecting rods, CNC ported cylinder heads, an HPE camshaft, upgraded lifters and pushrods, a full aftermarket exhaust and much, much more.
The result of all these upgrades? A Corvette that produces 831 hp and 739 lb-ft torque directly at the rear wheels. HPE doesn’t provide 0-60 mph times or top speed estimates for its builds, but judging by the dyno and testing video embedded above, this thing is ridiculously quick.
You might be asking yourself, why would you upgrade a Corvette Grand Sport instead of buying a Corvette Z06 and upgrading that, which is seemingly a better base package to start with? To us, it seems it would make more sense to buy a Grand Sport for cheaper and upgrade it into oblivion, rather than paying for a Z06 from the factory only to replace a bunch of the LT4 V8’s parts shortly after.
Check out the dyno test and road test of the HPE 1000 Corvette Grand Sport embedded above. You can also click here to visit HPE’s site and learn more about this package.