Can anyone tell me what year this motor is?

[CamCobalt]

I believe it is 100HP, im guessing the year is around 1966, however the color is throwing me off. I cannot find a tag on it.

 

[F_R]

Yeah, it's been repainted. Is the serial number disk still on top of the cylinder block, or has it been removed too?

 

[racerone]

The 1966 had the battery powered points distributor.---The 4 barrel carburetor.-----The 67 model had electronic breakerless distributor.-----The 68 model did not have the belt driven distributor.----Picture of the back of the block allows for near instant ( 2 seconds ) identification.