This is a four bolt 427 casting number 3869942 with a date code of E-8-6 which was a 425-430HP application in 1966 or a 425-435HP application in 1967. It comes with dome pistons 30 over with the steel crank. One piston has some damage on the top of it in the center from a valve tapping it but the cylinder walls are fine and the block is in very good condition. I'm taking offers. You can call me at 330-638-0511 or email me at
[email protected].