Doylestown Auto Repair

Mil-Spec built a one-off, track-ready Hummer H1

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Mil-Spec is one of the latest companies looking for success with restored and modified versions of iconic vehicles. Rather than

Porsche 911s

or ’60s trucks and SUVs,

its canvases are Hummer H1s

. The customer vehicles are big, brash off-road machines, but that’s not all the company is capable of. We recently learned that the crew over there built a

Hummer H1

meant for race track use, and it is amazing.

The base vehicle is a four-door convertible pickup truck, and Mil-Spec thoroughly changed the suspension. It has custom coilovers with stiff springs, and the entire suspension geometry has been revised. Overall, it was lowered a stunning seven inches compared with a stock


. The H1’s in-board brakes now feature six-piston brake calipers, and the wheels are wrapped in low-profile Pirelli P-Zero tires. Also impressive is the fact that the truck still has a part-time four-wheel-drive system.

Under the hood is a 6.6-liter Duramax


V8 similar to that in the customer models. But this one has been tuned all the way up to 800 horsepower and 1,500 pound-feet of torque. This engine also plays a role in this truck’s origins. Apparently the truck was used for final powertrain testing and development. But it was also built to highlight the company’s capabilities.

If you want one of these, well, you can’t have one. At least not yet. We asked a Mil-Spec representative, and he told us that there are no plans for offering track-oriented H1s. That’s understandable, since the company is still working through building and selling its initial run of 12 off-road-ready vehicles. He did say the truck has generated a lot of interest, though. So, maybe when the company has time, and if a really wealthy buyer


wanted one, maybe the Mil-Spec could work something out. But at least in the meantime, the company is sticking to tall, chunky-tired H1s.

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