bcowanwheels
Member
- 490
- 2
- 18
- Location
- KINGSPORT, TN.
These engines were state of the art in there day and built with all premium components hence the design. The timing chains was extreamly h/d and only went bad when the top end of the engine was starved for oil ( reason being the oil feed line went bad from passenger side of block to rear of cyl. Head. I have over 60k miles on my personal m715 with 0 problems, yes i dont drive it over 45 mph and i take good care of it. Just think 60k miles with 5:87 gears thats like almost 200k miles on a car engine..... The design of these engines was very well thought out. Hemi combustion chambers & hard valve seats , tuned exhaust manifold, steel crank, bullit proof ignition system, nodular iron connecting rods with big rod bolts, h/d hi-volume oil pump with easy replacement, extreamly fuel efficient and will run on very poor quality fuel nicely. It has tons of torque for its size. I,am a big fan as you can tell and thats why i,ve owned more than 25 of these trucks.