Howdy all. My family is in possession of an old 8th generation GMC K1500 Suburban with the 6.5L V-8. (Not sure of the exact year right now, but it's pre-facelift so it's got the squinty headlights.) Trouble is, that 6.5 is showing its age - it's tired and it does NOT wanna get going in the...

Sorry for the length. So I have been working on a plan for quite a while to replace my old 7.4 with a 5.9. I have a 1995 Suburban K2500 3/4 ton with 4l80E, np241 and 4.10's, and recently acquired a 93 5.9 6bt from a dodge 3/4 ton. I have plenty of experience to know I don't know everything I...