dilvoy

warwick, The 6.2 diesel is a very dependable engine. But as stated by others can't really be compared to the modern diesels fairly. I have installed a chrysler 440 gas engine into a 1977 J20 Jeep which has the same engine compartment as your truck and I can tell you that you will be able to fit the engine into the truck and you will have better clearance for the front driveshaft than I do, because of the higher ride hight of your truck. But...... the problem you will have is in the cooling system. Oh, if your vehicle has a heater box sticking into the engine compartment, you will have to probably cut a third of it off or mabye not. The radiator is the big problem. The grille opening was designed for a low power six cylinder Tornado or Hurricane engine that ran a lot cooler than a 440 or a diesel. More power output will generate more heat. The diesel engines really run hot compared to gas engines too. A chevy truck 6.2 diesel radiator compared to a chevy truck 454 gas radiator is twice as thick. You will in my opinion need a four row radiator and as wide and tall as can fit betrween your frame rails. Even if there is no direct air to it the extra size will help. A well built fan shroud is a must as well as a seven blade fan. Forget about electric fans. When I ran those expensive dual electrics my engine was at the verge of boiling over even on a foggy day. Get your tape measure out and see if that diesel with the fat radiator and fan will fit. Don't leave yourself just half an inch space either. Things move around while driving and especially four wheeling. Anything can be done and your conversion is not that difficult, but to make it really work like a factory installation, you may have to cut out part of the firewall and move it back three or four inches, but that diesel will make that truck a totally different vehicle. Lots of torque, compared to your original engine. The 6.2's mechanical injection pump make wiring a snap too. This conversion will probably hurt the collectors value of your vehicle, but it's your truck so do what you want.