Can any one tell me If this engine # 011640F55Y Block #CON4 K114 is from a truck or a car. Its in my 41 chevy coupe.

1439,

The following is what I believe your engine serial number to mean: 011640F55Y

011640 is the 10640 such unit assembled

F = Flint Engine Assembly Plant

55 = 1955 model year

Y = 1500-2100-2400 series Passenger car, Left Drive, With RPO 313 (powerglide). Although you didn't mention it, I believe you have a six cylinder unit. A simular V8 usage would have the letters FB in place of the Y.