In 1957, an 8-cylinder V-configuration was built. While the model designator “N” refers to “natural aspiration,” two-cycle General Motors and later Detroit Diesel engines in fact included one or two superchargers to force fresh air into the cylinders. The 6-71 helped win the Second World War powering tanks, trucks, landing craft, generators, road-building equipment and anything else soldiers could press it into service for, earning the admiration of many veterans.

General Motors’ 6-71N (inline 6-cylinder design, displacing 71 cubic inches per cylinder) debuted at the New York boat show in 1938 producing a then-remarkable 130 horsepower from 2,740 pounds including a marine transmission. Tough as nails, reliable, and capable of making stout power, they are awesome in all the ways that BangShifters love.8v71n_70837000_1.jpg 6-71N (1938): 130hp, 2,215 pounds without transmissionĪbove: 8v71 N (1957): 335hp, 3,130 pounds without transmission Manufactured for more than 50 years, starting in the late 1920s they still serve dutifully today and have legions of followers the world over.

The Detroit Diesel 2-stroke family will forever stand as one of the great internal combustion engine families of all time. These things carried a rating of 1300 at 1,300 RPM (weirdly) and perhaps if the pull was fully loaded at that point we would have seen those numbers. The neat 1100 lbs/ft that it makes seems neat but also falls a little below where we would have expected it to be. What’s neat about this is that the engine runs at a constant state of 2100 RPM (where it was governed from new) and makes 440hp with more than double that in torque. That’s what the full engine designation means. For those of you that have missed a decade of Detroit Diesel engine the mill is an 8 cylinder, V-style motor displacing 92ci per cylinder, is turbocharged, and after cooled. We’re guessing that this bad boy was rebuilt and was heading back into service, if not for the military but for the owner of the Oshkosh truck that it came out of. You are looking at a pull for a military cpec Detroit Diesel 8V92TA engine. Here’s some cool dyno video for you, not because of insane power or any sort of destruction but because it shows a tried and true engine package, one that is military-spec doing work.

Detroit diesel 8v92 specifications