Can you help identify this Aluminum 427 engine?

[Redfox0099]

A Little back story.


My father purchased a 1967 RS/SS Camaro and has had it ever since. Original paint, original interior... 28,XXX Miles.




Around 1975 he went to Houston, Texas and bought from a guy an aluminum 427 block and matching heads from a 1968 or 69 Corvette, Manual Transmission but he can't remember the color of the Vette though.

He recently took the motor out to replace gaskets and to fix an oil leak and took some pictures for me.




















Can you help identify this motor, I see it has the Winters Casting mark on the front of the block.

BTW here is another one he restored and his '10 Camaro.










Any help would be appreciated.

Nathan.