This Corvette ZR1 Crate Engine Packs Over 1,100 HP

Tuning / Comments

The small-block swap to end all small-block swaps.

There are a few important reasons why Chevy small-block V8s are so popular for engine swaps: they're externally compact and power-dense, making them easy to stuff into all sorts of different cars for a sizable performance boost, and with their proven cam-in-block design, they're remarkably durable to boot.

Now, meet what might be the mother of all swappable Chevy small-blocks: the Katech "Track Attack LT5". Based on the same bonkers, 755-horsepower LT5 that powered the C7-generation Chevrolet Corvette ZR1, the Track Attack LT5 has been expertly modified to be the ultimate track toy powerplant, backed by Katech's unimpeachable reputation.

Katech via Facebook

To start, Katech takes the original LT5 and ups the displacement to 388 cubic inches, from about 375, and the compression ratio from 10:1 to 10.3:1. Those changes don't seem all that drastic, but they're accompanied by a CNC port job on the cylinder head, a Competition Valve job, and high-performance pistons from Diamond Pistons. Best of all, customers will have a choice of supercharger: a Katech CNC-ported factory blower, or a Magnuson TBVS 2650 unit.

The maximum output after all that work? A whopping 1,159 horsepower - a 53% increase over the stock ZR1 - and 1,063 lb-ft of torque, Katech says.

Best Off-Road Vehicles For 2020
Best Off-Road Vehicles For 2020
History Of The Aston Martin Vantage
History Of The Aston Martin Vantage
2019 Chevrolet Corvette ZR1 Coupe Front Angle View Chevrolet
2019 Chevrolet Corvette ZR1 Coupe Badge Chevrolet
2019 Chevrolet Corvette ZR1 Coupe Front Seats Chevrolet

Granted, there's no shortage of aftermarket speed shops all vying for your hard-earned dollars by promising big power and exceptional build quality, but it's worth keeping in mind Katech's illustrious history. The outfit has built the engines that have powered countless Corvette Racing team victories, and the list of drivers who have at some time or another relied on Katech power is long: A.J. Foyt, Dale Earnhardt, Dale Earnhardt Jr., Jimmy Johnson, Johnny O'Connell, Ron Fellows, and more.

They can also count the first modern GM V16, the first E85-fueled Corvette, and the first 500-cubic-inch small-block without block modification among their list of accolades.

We can't wait to see what sort of crazy monster builds the company's new Track Attack LT5 ends up in.

2019 Chevrolet Corvette ZR1 Coupe Front Angle View Chevrolet
2019 Chevrolet Corvette ZR1 Coupe Side View Chevrolet
2019 Chevrolet Corvette ZR1 Coupe Rear Angle View Chevrolet
2019 Chevrolet Corvette ZR1 Coupe Front View Driving Chevrolet

Join The Discussion

Popular Tags Cars