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? ... ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.