1966 #858 Big Block 427 Square Port Heads
 

I have a nice stock complete set of 3873858 heads dated D-18-6 and E-2-6. This set is all stock with no porting or milling and has the original stock size 2.19 intake and 1.72 exhaust valves. The set is clean and had been gone through off of a running engine $2,000. 330-770-2517