Originally Posted by MrBob
Actually that's an FE Series engine - most likely a 428 between the fenders of what looks to be a Shelby GT 500 Mustang.
The GT-40 engine up top has a reproduction Shelby block. You can tell because the Shelby blocks have two side bolts per cap, where original Ford 427 blocks only have one.
Yeah I know... Call me the Klay of Ford engines. I'm a detail Nazi - Eeet must be correckt!