Our [2004 Chevrolet Corvette Z06 project](https://grassrootsmotorsports.com/project-cars/2004-Chevrolet-corvette-z06/) won the Unlimited 2 class at the inaugural [SCCA Tire Rack Time Trials Nationals](https://www.scca.com/pages/tt-nationals). Here’s a couple of our laps during the competition at [NCM Motorsports Park.](https://motorsportspark.org)

Don’t you just hate it when your Porsche 959 is in the way of your tractor? That hasn’t stopped [Olsen Motorsports](https://www.olsenmotorsports.net) from prepping their tractor for this year’s [Rennsport Reunion](http://www.weathertechraceway.com/porsche-rennsport-reunion-vi). That’s right, there’s going to be an actual [tractor race at Laguna Seca](https://driving.ca/porsche/auto-news/news/the-first-ever-porsche-tractor-race-is-happening-this-month). Check out the video of their racing machine to get a feel for what a top-level tractor racing entry looks like.

The Extreme Performance Summer tire category is a favorite among racers–that’s what all of the 200-treadwear near-race tires are technically called. It’s also a category dominated by a few old favorites. Tire Rack just put a few newcomers to the test, though, in this short video. Is it the most exciting thing you’ll ever watch? No, but it’s full of great info about your next set of tires. To read more, check out the [Tire Rack Test Report here](https://www.tirerack.com/tires/tests/testDisplay.jsp?ttid=234).

Going to [Holley LS Fest](https://www.lsfest.com/index.php/bowling-green/)? So are we–we’ll be competing for Grand Champion in our project LS-swapped 350Z. If your interests are more towards track laps than drag passes, though, check out our annual Road Course Challenge. What is it? We’ll let LS Fest explain: “The Grassroots Motorsports Road Course Challenge at Holley LS Fest places racers on track at NCM Motorsports Park in a competition for the fastest lap time. This segment was created for those hard core track rats who are looking for constant lapping to hone their skills. Lapping will take place on the 2 mile long West Course. The goal is five 20 minute sessions per day per driver. Cars will be grouped by skill level and instructors will be on site for novice drivers. This event segment is sanctioned by the USCA (Ultimate Street Car Association) whose primary purpose is safety, learning and fun. The Road Course Challenge is open to any make and model of vehicle as long as it is powered by a GM LS (or current generation LT) engine. The segment will be timed and various prizes will be awarded to each run group (novice, intermediate and expert).” Sound like fun? Of course it does. [Get more details and register here.](https://www.lsfest.com/bowling-green/events-ls-fest-bowling-green/roadcoursechallenge/)

Like the Mitsubishi Lancer Evolution? Here’s video of Andy Smedguard’s fastest lap from #GRIDLIFE TRACKBATTLE Round 3 X Automass at Autobahn Country Club. Andy broke the overall Time Attack record and the production car record on the South Course. Learn more about the car [here.](http://blog.365racing.net/about-365racing/the-cars/)

Racer Johnnie Lackey had to retire his 73’ Celica from a track day early due to an unexpected failure, time for a lexan windshield as weight savings?

Volkswagen set the fastest time ever at the Pikes Peak International Hill Climb with a staggering 7:57.148 time in their I.D. R electric prototype racer. Enjoy the full run from the best seat in the house—other than the driver’s seat.

We take a deep dive into the 365hp Kia Stinger GT. Is it a worthy rival to sport sedans from BMW, Audi and Lexus? Join us for our regular weekly show with your questions and comments on Grassroots Motorsports LIVE! Presented by CRC Industries at 9pm eastern Wednesdays on Facebook and YouTube. For a 15% discount off of a new or renewal subscription to Grassroots Motorsports magazine, hit [http://www.grassrootsmotorsports.com/livedeal](http://www.grassrootsmotorsports.com/livedeal)

Love spoilers? Exactly, and in this episode of Grassroots Motorsports LIVE!, we show exactly how we mounted our own spoiler to our C5 Corvette Z06.

There may have been a few shoddy-built kart-like vehicles featured in the news recently, but this is not one of them. That doesn’t make it any less extreme. This Vette-kart features all the weight savings plus ridiculous power from four turbos. The end goal was 2000 pounds and 800-1000 horsepower. Want to learn more? [Read through the build thread.](https://grassrootsmotorsports.com/forum/build-projects-and-project-cars/the-chupacabra-quad-turbo-ls-powered-c4-vette-kart/132398/page1/)