[dlv4540]

Factory big block square port heads casting number 3904391 dated D-11-7 complete with rockers and poly locks along with 3919840 dated E-24-7 complete with rockers and poly locks. I was told they came on the same engine even though they are different casting numbers and are a little over a month apart. They were rebuilt and have 2,000 miles on the set. They were set up on a tripower 427 motor and the guy is making it a pro touring car and did not want to use the top half of the motor. They have the stock 2.19 intake but have 1.88 exhaust valves but look to be stock other than that. I will take $1250 for the 391 single and $1250 for the #840 single head. You could use these as a pair on a motor as well 330-770-2517 and can ship if you cannot pick them up.