I've got a 5.0 EFI coming from a salvage yard for my 1994 F150. Its a truck engine according to them. I didnt ask what year it was from, according to them it is the engine for a 1994 f150. I didnt ask what exact year truck it was from. Now I'm wondering what year the engine is and if its a roller motor. What year did the 5.0 truck engines start as roller motors?