Engine builder in NY?

Are you wanting just machine work or to buy a complete, turn-key engine? If you want a complete engine, why limit yourself to one area? Plenty to choose from beyond NY.

V&V Machine was/is in Wappinger's which is not too far from you. Not sure if they are still building engines though. Mopar guys all the way.

Dwayne Porter is in Burlington, Vt.

Plenty of shops here on Long Island if you want to come over the bridge.