The good news is that the folks at Katech Performance have modified an LT5 engine – the one that makes the 2019 Corvette ZR1 the beast it is – and cracked 1,000 horsepower!
The bad news is that Katech says it can’t yet calibrate the C7 ZR1 engines for these mods. No word on when or if they will be able to.
Katech says it was able to tremendously increase the horsepower and torque on a stock LT5 engine in a series of three stages.
They started out by adding a Katech Xtreme DI (direct injection) system with open headers and a more efficient intake and ran it with 93 octane pump gas, producing 788.8 horsepower and 762.1 lb-ft of torque (up from the factory 755 horsepower and 715 lb-ft of torque).
Next, they converted to E85 fuel, installing a 30 percent set of over injectors and managed 925 horsepower and 859.5 lb-ft of torque.
Then, they installed an upper pulley supplied by Grip Tech and hit 992 horsepower and 991.3 lb-ft of torque.
Next, they ported the supercharger and installed a Katech throttle body. Fist bumps flew through the air when the crew managed a whopping 1,013.4 horsepower and 1,011.5 lb-ft of torque.
Uwe Ostmann, founder and president of Xtreme-DI, says they were able to break the 1,000 horsepower barrier with a “pretty much bolt-on” system, with a factory cam, a second fuel pump, a pulley, and porting of the blower a little bit.
Stay tuned, though, as the guys say this is just the first stage of their modifications. Next up will be a heads and cam package and even more air.
KatechPerformance / YouTube
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