I have seen this NOM used on a lot of Chevelle ads.What does"NOM" mean.I think it has somethiong to do with the engine.Maybe another way of saying not numbers matching but correct type of engine??Anybody know for sure???

260,
NOM = Not Original Motor.

------------------
Jeff ACES#841 TCG#158
68 SS396(454)
68 L78 Project
87 MC SS