Head Specs:
Part Number: TFS-5261B561-C04
Combustion Chamber Volume (cc): 56cc
Intake Runner Volume (cc): 227cc
Exhaust Runner Volume (cc): 66cc
Cylinder Head Style: Bare
Cylinder Head Material: Cast aluminum
Camshaft Style: Hydraulic roller
Intake Port Shape: Rectangular
CNC-Machined Combustion Chamber: Yes
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Combustion Chamber Style: Twisted Wedge
Intake Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Location: Standard
Intake Valves Included: No
Exhaust Valves Included: No
Valve Springs Included: No
Damper Spring Included: No
Number of Springs Per Valve: Dual
Retainers Included: No
Locks Included: No
Valve Stem Seals Included: No
Rocker Arm Studs Included: No
Rocker Arm Nut Thread Size: 7/16 in.-20
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: No.
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 11
Exhaust Valve Angle: 13
Valve Guides Included: No
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: No
Quantity: Sold individually.
Notes: Competition ported fully CNC machined, non-emissions heads. Trick Flow twisted Wedge 11R heads are machined for 1/2 in. head bolts; for customers with blocks that are machined for 7/16 in. head bolts, the use of TFS-51400419 head bolt bushings is required. Set-up for hydraulic roller cam shaft only.
Key Features:
227cc intake ports and 56cc combustion chambers
.625" thick deck
11 degree intake valve angle
13 degree exhaust valve angle
