Twisted Wedge® 11R 170, 190, 205, 205 HD, 227, and 227 HD Cylinder Heads for Small Block Ford Some parts are not legal for sale or use in California or other states with similar laws/regulations—see pg. 2 for details. WARNING: For Proposition 65 information, see pg. 2 Twisted Wedge 11R cylinder heads represent Trick Flow’s ultimate development of the famous Twisted Wedge innovation, featuring our most effi cient combustion chamber design and range of CNC-ported runner combinations. The combustion chamber and valve layout move the intake valves away from the cylinder walls to reduce valve shrouding, signifi cantly improving fl ow at higher lift. Shallow 11° intake/13° exhaust valve angles improve piston-to-valve clearance for high lift cams and reduce chamber volume for improved compression and effi ciency. High velocity runners are optimized on the fl ow bench and dyno proven to outperform the competition on hydraulic roller engines. Premium materials and components—along with world-class CNC processes— guarantee uncompromising quality and durability, dimensional accuracy, and balanced fl ow from port-to-port. Two combustion chamber volume options (most heads) allows you to tailor your compression ratios. Machined castings increase strength and have a billet-like appearance. The heavy-duty HD versions of the 11R heads have Manley Severe Duty stainless steel intake and exhaust valves to handle the additional stress of power adders. The HD heads are available with your choice of 205cc or 227cc intake runners. Twisted Wedge 11R 170 and 190 heads with CNC Street Ported runners are great entry-level CNC heads. They have a standard resolution surface fi nish for signifi cant performance gains. Choose Twisted Wedge 11R 190, 205, or 227 heads with CNC Competition Ported runners with a premium high-resolution fi nish for ultimate performance. Twisted Wedge 11R heads are compatible with stock pistons with lower lift cams and all Twisted Wedge specifi c pistons with cams up to .600" lift. Cylinder heads are available fully assembled or as bare castings. Sold individually. Twisted Wedge 11R 170 Cylinder Heads, CNC Street Ported Runners, Assembled TFS-52515301-C00 53cc combustion chambers, 170cc intake runners TFS-52516301-C00 63cc combustion chambers, 170cc intake runners Twisted Wedge 11R 190 Cylinder Heads, CNC Street Ported Runners, Assembled TFS-52515601-C01 56cc combustion chambers, 190cc intake runners TFS-52516601-C01 66cc combustion chambers, 190cc intake runners Twisted Wedge 11R 190 Cylinder Heads, CNC Competition Ported Runners, Assembled TFS-52615601-C02 56cc combustion chambers, 190cc intake runners TFS-5261T561-C02 56cc combustion chambers and titanium retainers, 190cc intake runners TFS-52616601-C02 66cc combustion chambers, 190cc intake runners TFS-5261T661-C02 66cc combustion chambers and titanium retainers, 190cc intake runners Twisted Wedge 11R 205 Cylinder Heads, CNC Competition Ported Runners, Assembled TFS-52615601-C03 56cc combustion chambers, 205cc intake runners TFS-5261T561-C03 56cc combustion chambers and titanium retainers, 205cc intake runners TFS-52616601-C03 66cc combustion chambers, 205cc intake runners TFS-5261T661-C03 66cc combustion chambers and titanium retainers, 205cc intake runners Twisted Wedge 11R 205 HD Cylinder Heads, CNC Competition Ported Runners, Assembled TFS-5261T541-CH3 54cc combustion chambers and titanium retainers, 205cc intake runners TFS-5261T641-CH3 64cc combustion chambers and titanium retainers, 205cc intake runners Airfl ow Results Twisted Wedge® 11R Dyno Results Twisted Wedge 11R Twisted Wedge 11R 227 Cylinder Heads, CNC Competition Ported Runners, Assembled TFS-5261T561-C04 56cc combustion chambers and titanium retainers, 227cc intake runners TFS-5261T661-C04 66cc combustion chambers and titanium retainers, 227cc intake runners Twisted Wedge 11R 227 HD Cylinder Heads, CNC Competition Ported Runners, Assembled TFS-5261T541-CH4 54cc combustion chambers and titanium retainers, 227cc intake runners TFS-5261T641-CH4 64cc combustion chambers and titanium retainers, 227cc intake runners TFS-5261T561-C04 Specifi cations Material: A-356-T61 aluminum Combustion Chamber Volume: 5301-C00: 53cc CNC-profi led T541-CH3/CH4: 54cc CNC-profi led 5601-C01/C02; T561-C02/C03/CO4: 56cc CNC-profi led 6301-C00: 63cc CNC-profi led T641-CH3/CH4: 64cc CNC-profi led 6601-C01/C03; T661-C02/C03: 66cc CNC-profi led Intake Port Volume: C00: 170cc CNC Street Ported C01: 190cc CNC Street Ported C02: 190cc CNC Competition Ported C03: 205cc CNC Competition Ported C04: 227cc CNC Competition Ported Intake Port Location: Stock Intake Port Dimensions: C00: 2.000" x 1.200" C01/C02: 2.100" x 1.280" C03/C04: 2.250" x 1.400" Intake Gaskets: C00: Fel-Pro 1250 C01/C02: Fel-Pro 1262 C03/C04: Fel-Pro 1262R or TFS-52400921 Intake Valve Diameter: C00: 2.020" (TFS-52500211) C01/C02: 2.055" (TFS-52500213) C03/C04: 2.080" (TFS-52500215) CH3/CH4: 2.080" (TFS-52500217) Intake Valve Seat: Ductile iron (TFS-52500271) Exhaust Port Volume: C00/C01: 66cc CNC Street Ported C02/C03/C04: 66cc CNC Competition Ported Exhaust Port Location: Stock Exhaust Port Dimensions: 1.250" x 1.480" Exhaust Gaskets: Fel-Pro 1415 or TFS-51490931 Exhaust Valve Diameter: C00/C01/C02/C03/C04: 1.600" (TFS-52500212) CH3/CH4: 1.600" (TFS-52500214) Exhaust Valve Seat: Ductile iron (TFS-30600274) Valve Angles: 11° intake, 13° exhaust Valve Guide Material: Bronze alloy (TFS-52500251) Valve Seals: Viton® fl uoroelastomer (TFS-30600455) Valve Seat Angles: 45° x multi angle Valve Spring Pocket Diameter: 1.640" Valve Spring I.D. Locators: 1.300" (TFS-21400442) Valve Spring Retainers: 7° x 1.300" o.d. chromoly steel (TFS-21400415) 7° x 1.300" o.d. titanium (TFS-214T0415) Valve Stem Locks: 7° steel bead lock (TFS-30600444) Valve Springs: 1.275" o.d. dual spring (TFS-16306-16) 150 lbs. @ 1.800" installed height 420 lbs. @ 1.200" open 450 lbs. per inch rate .600" max. valve lift Guideplates: 5/16" (TFS-51400623) 3/8" (TFS-51400624) Rocker Arm Studs: 7/16" (TFS-51400614) Rocker Arms: TFS-51400520 (1.6 ratio, 7/16" studs) TFS-51400521 (1.72 ratio, 7/16" studs) Minimum Bore Diameter: 4.000" Cylinder Head Bolts: TFS-92005 Head Gaskets: TFS-51494030-040 or TFS-51494060-040 Pushrod Length: Longer than stock required Spark Plugs: Autolite 3924 NOTE: Drilled for 1/2" head bolts; 7/16" head bolts require TFS-51400419 reducer Viton® is a registered trademark of DuPont Performance Elastomers.
TrickFlow PRI Catalog_26
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