Shelby FE Aluminum Cylinder are cast from A-356 aluminum, heat-treated to T-6 hardness level and precision CNC machined. Patterned on Ford's famous 427 FE medium raiser cast iron heads, Shelby FE heads offers leading edge airflow improvements, starting with standard 2.250-inch intake and 1.750-inch exhaust valve diameters. Due to valve size, heads are suitable only for Shelby 427 Alloy FE or factory 427 cast iron blocks. Heads utilize a 14mm diameter, 3/4 -inch reach, gasket spark plug positioned in the shock location. They are solid in pairs, complete or bare. Bare heads come with ready-to-run valve seats, so you just add valve components and go. All Shelby heads are pressure checked.

Cylinder head design improvements include:
  • Modified intake port short turn radius along with valve bowl area for improved airflow quantity and quality. Ample port wall thickness allows room for additional porting.
  • Exhaust port floor is raised 0.250-inch for improved exhaust flow velocity.
  • Manganese bronze valve guides provide superior heat transfer and oil retention for proper valve stem lubrication.
  • Stainless steel thread insert fitted in exhaust flange and rocker shaft assembly mounting boltholes add strength and prevent thread wear.
  • A cast-in "bridge" in the coolant passage openings, add strength. Deck surface is 5/8-inch thick.


Shelby FE™ Aluminum Cyclinder Heads
attached to the 427 FE™ aluminum block.
 
Shelby FE™ Aluminum Cylinder Head Technical Features:
BEAR HEADS
Head material A356, T6 aluminum
Valve diameters 2.250-inch intake; 1.750-inch exhaust
Combustion chamber 82 cc
Valve seats Unleaded fuel compatible; Multi-angle valve seats
Valve guides 0.375-inch inside diameter; manganese bronze material
Exhaust port bolt 2 bolts; vertical
Air flow, intake

280 cfm @ 28-inch H20
320 cfm, with Stage II porting
Airflow, exhaust 185 cfm @ 28-inch H20
235 cfm, with Stage II porting
Intake port volume 163 cc
Exhaust port volume 128 cc
COMPLETE HEADS INCLUDE:
Valves Premium one-piece stainless steel, swirl polished with under-cut stems
Valve stem seal type Teflon, positive seal
Valve springs Dual springs with damper
Valve retainers Titanium
Valve locks 10-degree, machined
 
  


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CARROLL SHELBY ENTERPRISES, INC.
19021 S. Figueroa St.
Gardena, CA 90248-4510
Tel : 310-538-2914
Fax : 310-538-1815