7.4L Duramax Buildup: The Chevy 454 Returns
As a 1,300hp Duramax diesel
The 454ci big-block gasoline V-8 may be one of the most coveted, recognizable powerplants ever cast by General Motors. Its large displacement and big bore gave it the kind of low-rpm power a small-block owner could only dream of. Back in the '70s and '80s, the 454ci (7.4L) GM big-block separated the men from the boys.
Today, another engine, also built by the General, is changing the diesel enthusiasts' world: the 6.6L (403ci) Duramax. With common-rail direct-injection, aluminum cylinder heads, six head bolts per cylinder, and turbocharging as standard equipment, it's the powerplant of choice for many hot-rodders, drag racers, and sled pullers alike. And-just like in the days of old-the die-hard Duramax fans are after the same thing: horsepower.
When we heard a rumor that the folks at Fleece Performance Engineering were putting together a 454ci (7.4L) Duramax, we had to see it for ourselves. So we headed to its shop in North Salem, Indiana, to get a look at a one-of-a-kind engine built to be used in a 3.0 Class sled pulling rig. If this is any indication of how Fleece's new, big-block, Duramax engine program will operate, the Cummins camp will definitely have its hands full.
Banks PowerAzusa, CA 91702
Industrial InjectionSalt Lake City, UT 84104
Mahle MotorsportsFletcher, NC
Fleece Performance EngineeringNorth Salem, IN 46165
SoCal DieselValencia, CA 91355
CarrilloMooresville, NC 28117