Butler Built Customers D-Port Cast Iron Cylinder Heads, Stock (Pair)

Stock Cast Iron D-Port Head Package

• Ship to us
• Clean and Mag to make sure they are not cracked
• Milling optional / additional charge (let us know your desired compression ratio) 
• Stock Port Size
• Competition 3 angle valve job done with our Serdi machine
• FULL bronze guides (not liners)
• Ferrea Stainless Steel valves
• Surfaced on all 3 sides
• Retainers & HD valve locks
• Tall dual springs
• New 5/16 guide plates
• 7/16 rocker arm studs
• HP valve seals
• Blue printed and assembled per application

• Comes with Blueprint and spec sheets.

• We recommend shipping to us in small wooden crates or heavy packaging since the heads are heavy and to keep from damaging. 
• Can also be dropped off or shipped on small pallet
• We can help arrange inbound shipping if needed at additional charge
• If possible send only bare disassembled heads
• Image for display purposes only