GM Duramax 6.6L Diesel to power Army's HMMWV replacement

Gorehamj · August 27, 2015

John Goreham

Contributing Writer, GM-Trucks.com

8/27/2015

Oshkosh defense has been awarded the contract for the new "HUM-V" replacement the Marines and U.S. Army will use going forward. The new vehicle is much beefier than the outgoing HMMWV and was designed to be more mine-resistant, and offer better troop protection than the HMMWV. Called the Joint Light Tactical Vehicle, JLTV, the new vehicle form Oshkosh Defense has 20" of wheel travel.

https://vimeo.com/134137367

Powered by the rugged GM Duramax 6.6-liter turbo-diesel, the JLTV is 70% faster than the prior standard for speed. The new JLTV is a complete rethink of armored off-road troop vehicle based on lessons learned over the past two decades. The fully-protected turret and ability to employ remote weapons systems in particular differentiate the new vehicles from past HMMWV designs. When even more speed, mobility and off-road capability is needed, the military can call upon the Polaris MRZR2 and MRZR4 two and four passenger special forces ATVs shown below.

1997SierraSLT · August 27, 2015

that's shocking.....would have definitely thought the Cummins turbo-diesel would have been first choice considering it is our military.

Chris · August 27, 2015

that's shocking.....would have definitely thought the Cummins turbo-diesel would have been first choice considering it is our military.

The old one used the 6.2 or 6.5 Diesel. More than one company submitted designs, just the one from Oskosh Defense won the contract

barry G · August 28, 2015

that's shocking.....would have definitely thought the Cummins turbo-diesel would have been first choice considering it is our military.

their first existence made the v8 diesel famous...

scania in the mack in the usa was first, but osh kosh was right there within a few years.

Glad to see they are using a real linear to rotation..

A little bigger would be 3208 cat territory.

inline has got some problems, simply lay a load on for a long time or unbalance terrain. they cannot bullcrap the military, only us civilians on pavement and drag strips.

Chris · August 28, 2015

Not only that, the inline 6 also requires a longer engine compartment. Oshkosh has used 2 stroke V8 Detroit Diesel engines in their airfield fire engines

Cowpie · August 29, 2015

Interesting how V8 diesels were tried in commercial semi trucks and they no longer exist as an option. Inlines are the name of the game and do a great job in that scenario. So much for bullcrapping us civilians. The present crop of inlines in commercial semi trucks, pulling the same heavy loads over the same conditions, have increased engine longevity, increased fuel economy by well over 50% also. 20 years ago, if one was reaching an average 6 mpg with a commercial diesel in a semi, they would be giddy. Today, 8+ mpg is more the name of the game, and the mystical ceiling of 10 mpg has been shattered as well. Given that percentage increase in mpg, can the Dmax make the same claim? Hardly. And commercial inlines are EXPECTED to go well beyond 1 million miles before any serious engine repair. It is the rule, not the exception. I realize this is all not a apples to apples comparison, but V diesels are not all the spectacular. I have not ever been motivated to buy a V diesel. And after 7 years in the Army, I am not so motivated to think that just because the military bought something, makes it a great thing. Everything from G.I. socks on up is made by the lowest bidder that meets a minimum standard.

SnakeEyeSS · August 31, 2015

Well, hope the US is never in a tight urban area in warfare. Guess that's what the bombs are for, to clear it out

(the military looked at beefed up half tons for a while because a hummer could not cross more than half the bridges in Europe. These are even bigger!)