Not wanting to face any overheating issues, a custom aluminum radiator using a stock clutch fan and fan shroud was fabricated to ensure that didn't happen. A PPE intercooler was also mounted above (and in front of) the radiator and pulls air through vents in the hood.Not wanting to face any overheating issues, a custom aluminum radiator using a stock clutc The final step was a power upgrade, in the form of a PPE Hot Rod/Race calibration and a Garrett GT4094 turbocharger. Horsepower is measured at 570 hp at the rear wheels, while torque checks in at 1,280 lb-ft. Boost is 35 psi, and EGT hits a max of 1,450 degrees during dragstrip passes. A PPE Stage V Allison transmission with a PPE converter handles all the power.The final step was a power upgrade, in the form of a PPE Hot Rod/Race calibration and a Ga Inside, a heavily insulated dog house was built to clear the big Duramax engine and Allison transmission and is perhaps one of the most comfortable additions to the vehicle. Since everything else in the interior is metal (which gets quite hot), the cover is a good place to rest your arm (or to hold on) while riding shotgun.Inside, a heavily insulated dog house was built to clear the big Duramax engine and Alliso A custom dash houses gauges that keep an eye on boost, EGT, oil temperature, and transmission temperature.A custom dash houses gauges that keep an eye on boost, EGT, oil temperature, and transmiss The seats are stock HUMVEE units and are actually more comfortable than you'd think. The Simpson racing harnesses make sure everyone stays secure.The seats are stock HUMVEE units and are actually more comfortable than you'd think. The S HUMVEEs are very capable off-road, as Joe demonstrated by climbing this steep hill (in two-wheel drive). They can also traverse the side of a hill with a 40 percent side slope, thanks to their wide stance.HUMVEEs are very capable off-road, as Joe demonstrated by climbing this steep hill (in two The rear bumper has a Class IV hitch and trailer hookup just in case Joe ever feels like towing. Right behind the bumper is a set of Setrab transmission coolers with fans that keep the ATF at 150 degrees.The rear bumper has a Class IV hitch and trailer hookup just in case Joe ever feels like t A 4-inch turbo-back exhaust was custom built for this application and provides a throaty V-8 sound in addition to a cool turbo whistle.A 4-inch turbo-back exhaust was custom built for this application and provides a throaty V Part of the Hummer's off-road capability comes in the form of superior ground clearance thanks to front and rear independent suspension setups. The differentials were beefed up with Detroit Lockers, and the driveshafts were fitted with 1410 series U-joints. The halfshafts are from a Hummer ambulance (which uses stronger pieces to cope with the added weight) and are connected to the stock 2.73 axle gears. To reduce drivetrain breakage, all Hummer H1s come with gear-reduction hubs at each wheel. This additional 1.92:1 gear ratio makes the final drive ratio closer to 5.24:1.Part of the Hummer's off-road capability comes in the form of superior ground clearance th « | 1 | 2 | View Full Article By Jason Sands Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
