Slant 6 - 727

I don't know. I think they did it right. Imagine loading the heck outta that truck, plus being off road too. The slant 6 has a long stroke and lots of torque cracked right off idle. Especially in a 4x4 in low range, I could see one breakin something.
Perfect combo for ultimate reliability. Can’t kill the motor, and motor can’t kill the drivetrain.