>From what I can tell in the FSM it'll just say "A-318", right? The FSM didn't describe WHERE to look for the number, you just have to guess @ where the drawing is of on the block! Is there any way to tell the year by casting numbers on the side , etc? And they did not VIN stamp or cast anything into the poly motors, correct? Ultimately, I'm going for is there ANY to tell if this is the original motor or not? Bill M 65 Coronet 500 'vert On 10/15/07, Gary H. <62to65mopar@xxxxxxxxxxx> wrote: > > The ID is, I believe, on the front of the block, driver's side, just > below where the head bolts on. > > I've never seen a blue painted poly motor, fwiw. That doesn't mean there > were none. One paint reference I have says truck motors were yellow with > black accessories. > > Gary H. > > > Bill wrote: > > > ...so my question is...where are the ID numbers on a Poly > > motor? And when did they paint Poly motors blue? ...