By today's standards, maybe. However, according to an article at Jeep 4.0 liter six cylinder engine, "In 1990, when the 4.0 still had 177 hp, the GM 4.3L V6 only made 160 hp, the Ford 4.9L I6 (used in the F150 and Econoline) only made 145 hp, the Ford 4.0 V6 made 155 hp, the Chrysler 5.2L made...