Trick Flow Twisted Wedge 11R Cylinder Heads Engineered for Boosted and Nitrous Small Block Fords

High Performance Cylinder Heads Designed for Extreme Power Adders

When your small block Ford engine runs turbochargers, superchargers or nitrous oxide systems, the cylinder head you choose becomes critical. Trick Flow has released updated versions of their Twisted Wedge 11R line specifically engineered to handle the intense pressures and stresses that come with modern forced induction and chemical power adders.

These heavy duty heads represent the latest evolution of Trick Flow’s legendary Twisted Wedge platform. The key upgrade centers on Manley Severe Duty stainless steel valves that can withstand the extreme cylinder pressures generated when boost or nitrous is active. Whether you are running low or high boost levels or employing aggressive nitrous oxide strategies, these valves maintain their integrity and continue delivering power under punishment.

Smart Engineering for Flow and Compression

The Twisted Wedge 11R design carries forward proven features while adding muscle where it matters most. Reinforced castings provide superior strength while maintaining the aesthetic appeal of billet inspired finishing. The combustion chamber and valve positioning push the intake valves further away from cylinder walls, which eliminates valve shrouding that would otherwise restrict airflow at higher valve lifts.

The intake and exhaust valve angles have been optimized at shallow angles of 11 and 13 degrees respectively. This geometry improves clearance between the valves and the piston, allowing you to run more aggressive camshaft profiles without risk of collision. The shallower angles also reduce combustion chamber volume, which boosts compression ratio and improves thermal efficiency.

The high velocity intake runners were developed on the flow bench and validated on the dynamometer. Cylinder head performance advances continue to focus on maximizing airflow characteristics, and Trick Flow’s signature CNC Competition Ported finish ensures consistent dimensional accuracy from one casting to the next and balanced air movement across all ports.

Two Displacement Options for Custom Compression

The Twisted Wedge 11R line comes in two combustion chamber volumes, allowing engine builders to dial in the exact compression ratio needed for their specific application. The 205 and 227 intake port options, paired with 74 cubic centimeter exhaust ports, give builders flexibility whether they are targeting a stock piston combination with conservative cam profiles or moving to high lift performance camshafts.

These heads accept all standard Twisted Wedge pistons and work seamlessly with factory pistons when using stock or mildly lifted camshafts. If you are building a dedicated race engine or extreme street car, aggressive camshaft profiles up to 0.600 inch lift are fully supported, making these heads suitable for hardcore performance combinations.

Premium Components Throughout

Trick Flow has equipped these heads with quality components at every critical point. The 2.080 inch intake and 1.600 inch exhaust valve sizes deliver the flow capacity needed for boosted or nitrous applications. Ductile iron valve seats ensure durability under the thermal cycling that comes with power adder use, while bronze alloy valve guides provide reliability across thousands of heat cycles.

The valve spring package consists of Trick Flow by PAC Racing dual springs rated at 1.275 inches. These springs maintain proper valve control across the full engine RPM range and work effectively with the Manley Severe Duty valve packages. Steel valve stem locks with a 7 degree angle and titanium retainers complete the valvetrain package, combining weight savings with the durability required for extreme applications.

What This Means for Buyers

If you own a small block Ford and plan to install forced induction or nitrous oxide systems, cylinder head selection should not be an afterthought. Heads designed for naturally aspirated engines often lack the valve and casting strength needed to handle power adder boost levels safely. The Twisted Wedge 11R addresses this directly with purpose built internals that maintain reliability when conventional heads would fail.

These heads are available fully assembled or as bare castings depending on your build timeline and assembly preferences. They are sold individually, so you can purchase a pair and begin your build immediately. The investment in purpose designed cylinder heads pays dividends through increased reliability, better efficiency, and the confidence that your engine will handle the power levels you are targeting.

Modern CNC machining and flow bench testing have raised the bar for aftermarket cylinder heads, and the Twisted Wedge 11R represents that current standard for small block Ford applications. Whether you are building for drag racing, street performance or weekend warrior events, matching your cylinder heads to your power adder strategy ensures your engine build will deliver consistent results.