geterdun
+1y
I think most v6 engines will be drop in fits, just mounts and hook ups. V8's require a lot of redesign in front of the engine, with room for a fan on engine. Can't cut the firewall, the heater and all that goes with it is top center behind the engine.
A rod rattle is like a hammer knocking around in the oil pan. A lifter is more a tick. I saw where one member posted a video of the engine running, that made it easy for someone to help identify the noise.
Did the truck sit a long time not being run before you bought it?