Leave it to Trick Flow to take the industry-leading Twisted Wedge ® 11R 205 / 227 series cylinder heads for small block Ford and make them even better! The heavy-duty 11R 205 HD and 227 HD heads offer the same great performance as the standard versions but feature upgraded 2.080 "/ 1.600 " Manley Severe Duty stainless steel valves to manage the high pressures and stresses produced by big power adders. Additional features include:

• 205cc or 227cc CNC Competition Ported intake runners

• 66cc CNC Competition Ported exhaust runners

• 54cc or 64cc CNC-profiled combustion chambers

• 11 ° intake / 13 ° exhaust valve angles

• Trick Flow by PAC Racing. 600 " maximum lift dual valve springs designed specifically for hydraulic roller cams

• Titanium retainers

• Compatible with stock pistons with lower lift cams and all Twisted Wedge specific pistons with cams up to. 600 " lift

Twisted Wedge ® 11R 227 HD Dyno Results

Airflow Results Twisted Wedge ® 11R 227 HD with 54cc CNC-Profiled Combustion Chambers

Test Engine: 12.18:1 compression 427 c. i. d. with Trick Flow Twisted Wedge ® 11R 227 cylinder heads( TFS-5261T541-CH4), Trick Flow Track Max ® hydraulic roller camshaft( TFS-51403005), 1.72 ratio roller rocker arms, Trick Flow R-Series 11R 227 Port-Matched intake manifold( TFS-52500114-C04), Hooker headers with 1 7 ⁄ 8 " primaries, 3 " dual exhaust with Flowmaster mufflers.

. 650 " 342 229

Tests conducted at 28 " of water( pressure). Bore size: 4.125 "; exhaust with 1 7 ⁄ 8 " pipe.

Engineered for Performance! New heads are just one part of the Serious Horsepower formula. To complete it, you’ ll need some more components.

Track Max ® Hydraulic Roller Camshafts

• Dyno proven to significantly increase power

• Hydraulic roller designs available up to 250 °/ 254 ° duration and. 595 "/. 595 " of lift

• Made from premium billet steel blanks

R-Series 11R 205 / 227 Port-Matched Intake Manifolds for 11R 205 / 227 Series Cylinder Heads

• CNC Competition Ported runners portmatched to Twisted Wedge 11R 205 or 227 standard and HD cylinder heads

• 3,500-7,500-plus RPM range

• Available in carbureted and carb-style EFI versions

Roller Rocker Arms

• Heat-treated CNC-machined bodies

• Needle-bearing fulcrums

• Reliefs for valve spring clearance

• Available in 1.6 and 1.72 ratios for 3 / 8 " or 7 / 16 " rocker studs

• Sold in sets of 16 with polylocks

Scan here for more details.

2609DUTF

Some parts are not legal for sale or use in California or other states with similar laws / regulations. Please check your state and / or local laws / regulations.