Shelby Aluminum FE Heads are cast from A-356 aluminum, heat treated to T6 hardness level and precision CNC machined. Patterned on Ford's famous 427 FE medium-raiser cast iron heads, Shelby FE heads offer leading edge air flow improvements, starting with standard 2.250-inch intake and 1.750-inch exhaust valve diameters.
Due to valve size, the heads are suitable only for Shelby 427 Alloy FE or factory 427 cast iron blocks. These heads utilize 14mm diameter, 3/4-inch reach, gasketed spark plugs positioned in the stock location. They are sold in pairs, complete or bare.
Note: A revised design with the valve locations moved, these heads will require custom pistons.
Bare Heads:
- Head Material – A-356, T6 Aluminum
- Valve Diameters – 2.250-inch intake; 1.750-inch exhaust
- Combustion Chamber – Approx. 63cc as cast
- Valve Guides – 0.345-inch; manganese bronze material
- Exhaust port bolt – 16 bolt pattern
- Air Flow, Intake – 310cfm @ 28-inch H2O
- Air Flow, Exhaust – 210cfm @ 28-inch H2O
- Intake Port Volume – 195cc
- Exhaust Port Volume –135cc
Complete Heads Include:
- Valves – Premium 1-piece stainless steel, swirl polished w/undercut 11/32 stems
- Valve Stem Seal Type – Viton, positive seal
- Valve Springs – High Silicon Dual Springs w/Damper
- Valve Retainers – Chrome moly steel
- Valve Locks – machined
Note: Cost of shipping may change once ready to ship
