Mack E7 Engine
Power
250-400 HP
Speed
1700-1800 RPM
The Mack E7 direct injection heavy-duty diesel engine is a four cycle, in-line six cylinder design.
It is turbocharged and chassis mounted air-to-air aftercooled, with power ratings of 250 hp to 400 hp (186 kW to 298 kW) at 1700 to 1800 rpm, calibrated to 1990 EPA standards.