The latest GM-powered vehicle to hit the Hoonigan Burnyard is a K5 GMC Jimmy with a built 572 cubic-inch Big Block sitting under the hood.
The Hoonigan Burnyard, for the uninitiated, is a small section of asphalt that has been cordoned off by the automotive media collective so their guests can perform burnouts and drifts in relative safety and security. We’ve seen all sorts of high-horsepower GM vehicles do their thing at the Burnyard, from an LS-swapped Chevy C10 to an 800-horsepower Pontiac GTO, but this K5 GMC Jimmy is a bit of an unexpected sight in this setting. With a high ride height, off-road tires and automatic transmission, this certainly doesn’t seem like it’d be a great choice for burnouts – but what’s under the hood changes everything.
While a stock K5 GMC Jimmy would have absolutely no business being at the Burnyard, this particular one has a 572 cubic-inch Big Block built by Smeding Performance sitting out front, which makes roughly 733 horsepower and 733 pound-feet of torque, according to the owner. Power is sent to all four wheels through a reinforced 4L85E transmission built by Gearstar and stock axles. The Jimmy is otherwise mostly stock, apart from a set of KMC 444 beadlock wheels and off-road tires. It’s even running stock brakes at the moment, although a big brake upgrade bit from Baer is on the way.
With 733 horsepower under the hood, this GMC Jimmy has no problem smoking all four of its tires at the Burnyard. We were concerned this off-roader would flip over with the way the owner is wheeling it, but thankfully it remains right-side-up throughout the video. As Hoonigan says in the video description, if you didn’t think something this big could dance, hit play and prepare to be proven very wrong!
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Comments
I need to know the brand and part number of the brake booster on the K5. I have a 1978 Chevy BIG10 with a big block and the stock brake booster is way too big. I have a solid lifter roller cam and it’s a pain to get the driver side valve cover off. I also have to use the tall valve covers because of the stud girdle. I really enjoyed the video, that K5 is bad to the bone !
Thanks
That is one nasty ride! I love it when a vehicle can take what a driver who just does not give a *beep* can throw at it.
Wow! 572 big block gasoline. Fuel consumption must be like flushing a toilet.
I built a 557 with Edelbrock performer RPM square port heads to replace my 454 with oval port 781 heads and the gas mileage is still 10MPG. I have the same 850 Holley also and if I had a fuel injection setup it might do a little better but when you are that low on gas mileage it’s hard to increase it very much. I bought my 78 truck new and it has 82K miles, I couldn’t afford to drive it every day.
NICE!!!!!!!!!! There is “No replacement for displacement” Had a Big Block in my ’76 Stepside, Silverado. That’s when Silverado, was the top of the line! Had a beefed up turbo 350 and a part time transfer case. And 4:10 gears. it was a TANK. got about 10 MPG, if I kept my foot out of the Holley 850. Sure do miss that truck. Sold it too win custody of my two kids. I think my kids are worth it.
I do not think it costs as much to feed your kids as it did the truck… look at it as a “cost savings” : )