Lightly Modified Corvette ZR1 Sounds Great, Runs Greater

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C7 Corvette ZR1 built by Late Model Racecraft makes 807 wheel horsepower on a conservative tune.

The new Chevrolet Corvette ZR1 is an absolute beast, hitting the market as the most powerful road car that General Motors has ever offered while being the third-most-powerful American production car ever. With 755 horsepower and 715 lb-ft of torque, the new ZR1 will beat just about any stock production car from any automaker in the world, but modified cars obviously pose more of a challenge.

For those Corvette ZR1 owners who want to reduce the number of cars on the road that might beat them, the team at Late Model Racecraft has the answer. Actually, LMR has multiple options for owners of LT5-powered vehicles and today, we bring you a look at their LMR1000HP package in a pair of videos from the shop’s official YouTube channel.

LMR1000HP Corvette ZR1

LMR1000HP Corvette

Unfortunately, Late Model Racecraft doesn’t have the details of this package on the company website just yet, but when they shared these videos on social media, they listed a handful of automotive brands that lend some hints as to what might be involved in the build. This includes Cam Motion and American Racing Headers, so when coupled with the sound of the car on the dyno, it is safe to guess that this car has an aftermarket camshaft and a set of headers.

LMR1000HP Corvette ZR1

Since LMR performs cylinder head work, there could be some internal work done to this LT5, but with roughly 200 extra wheel horsepower on a conservative tune, we would guess that it has an aftermarket upper pulley, lower pulley or both. As for that tune, the video details explain that the car only has about 250 miles on the odometer, but when they get up to 1,000 miles, the shop will lift the output to 900 wheel horsepower.

Worked LT5 in Action

In the video above, we watch at a C7 Corvette ZR1 with the LMR1000HP package works out on the dyno. The camera angle changes a few times, allowing us to hear the LT5 roar from different perspectives and in every one, the cammed-and-tuned ZR1 sounds absolutely amazing, including the last bit where the car is idling.

LMR1000HP Corvette ZR1

The first video ends with a look at the dyno sheet, showing 807.79 horsepower and 775.70 lb-ft of torque at the rear wheels, up from 609.17 horsepower and 588.36 lb-ft of torque in stock form.

The video below is just for those folks who love to listen to the chop of a cammed V8, as it is a simple walkaround with the engine idling.

Crank up your speakers and enjoy the fruits of Late Model Racecraft’s labor.

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"Before I was old enough to walk, my dad was taking me to various types of racing events, from local drag racing to the Daytona 500," says Patrick Rall, a lifetime automotive expert, diehard Dodge fan, and respected auto journalist for over 10 years. "He owned a repair shop and had a variety of performance cars when I was young, but by the time I was 16, he was ready to build me my first drag car – a 1983 Dodge Mirada that ran low 12s. I spent 10 years traveling around the country, racing with my dad by my side. While we live in different areas of the country, my dad still drag races at 80 years old in the car that he built when I was 16 while I race other vehicles, including my 2017 Dodge Challenger SRT Hellcat and my 1972 Dodge Demon 340.

"Although I went to college for accounting, my time in my dad’s shop growing up allowed me the knowledge to spend time working as a mechanic before getting my accounting degree, at which point I worked in the office of a dealership group. While I was working in the accounting world, I continued racing and taking pictures of cars at the track. Over time, I began showing off those pictures online and that led to my writing.

"Ten years ago, I left the accounting world to become a full-time automotive writer and I am living proof that if you love what you do, you will never “work” a day in your life," adds Rall, who has clocked in time as an auto mechanic, longtime drag racer and now automotive journalist who contributes to nearly a dozen popular auto websites dedicated to fellow enthusiasts.

"I love covering the automotive industry and everything involved with the job. I was fortunate to turn my love of the automotive world into a hobby that led to an exciting career, with my past of working as a mechanic and as an accountant in the automotive world provides me with a unique perspective of the industry.

"My experience drag racing for more than 20 years coupled with a newfound interest in road racing over the past decade allows me to push performance cars to their limit, while my role as a horse stable manager gives me vast experience towing and hauling with all of the newest trucks on the market today.

"Being based on Detroit," says Rall, "I never miss the North American International Auto Show, the Woodward Dream Cruise and Roadkill Nights, along with spending plenty of time raising hell on Detroit's Woodward Avenue with the best muscle car crowd in the world.

Rall can be contacted at [email protected]

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