1985-up: AM Gen­eral M988 HMMWV

Diesel World - - Vintage Smoke Light Trucks: Part Two -

The AM Gen­eral M988 was the first in a line of mil­i­tary ve­hi­cles that cap­tured Amer­ica’s imag­i­na­tion and stood on the front lines of the na­tion’s de­fense. De­signed and built to be a mil­i­tary ve­hi­cle, it was one of the few mil­i­tary ve­hi­cles to go civvy rather than the other way around. Start­ing in 1992 the Hum­mer (later known as the H1) went on sale and was built into 2006. The pow­er­plant came from Gen­eral Mo­tors, the DDA 6.2L diesel V8—none other than the light truck 6.2L V8 diesel with a few special ad­di­tions and none­mis­sions tun­ing. In the ’90s a non-turbo ver­sion of the 6.5L diesel re­placed it. Though re­placed in GM trucks af­ter 2000, the 6.5L re­mains in pro­duc­tion just for these ap­pli­ca­tions.

DIS­PLACE­MENT: 6.2L (379ci), 6.5L (395ci)

POWER: 150 hp @ 3,600 rpm/160 hp @ 3,200 rpm TORQUE: 259 lb-ft @ 2,000 rpm/

290 lb-ft @ 1,800 rpm

COM­PRES­SION RA­TIO: 21.3:1/20.2:1 AS­PI­RA­TION: Nat­u­ral

 Un­known year M988 HMMWV

 6.5L NA diesel

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