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Top Street Performance

Ford Small Block Hydraulic Roller Assembled Aluminum Cylinder Head

Ford Small Block Hydraulic Roller Assembled Aluminum Cylinder Head

SKU: SKU: JM4321

Regular price $640.00
Sale price $640.00 Regular price
Shipping calculated at checkout.

Low stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • 185cc intake runners support street and performance SBF builds
  • Hydraulic roller valvetrain compatible design
  • 60cc heart chambers promote efficient combustion
  • Fully assembled aluminum construction saves installation time

Description

Upgrade your Small Block Ford engine with a fully assembled aluminum cylinder head engineered for hydraulic roller camshaft applications. Featuring 185cc intake runners, 60cc heart-shaped combustion chambers, rectangular intake and exhaust ports, and premium valvetrain components, this cylinder head is designed to improve airflow, throttle response, and overall engine performance across a wide range of Small Block Ford combinations.

The 185cc intake runner design provides an excellent balance of airflow and intake velocity, making these cylinder heads well suited for 302, 306, 331 stroker, 347 stroker, and 351 Windsor performance builds. The efficient heart-shaped combustion chamber design helps support improved combustion efficiency, stronger torque production, and increased horsepower potential throughout the RPM range.

Constructed from lightweight aluminum, these cylinder heads help reduce weight while dissipating heat more efficiently than traditional cast iron castings. Stainless steel valves, bronze valve guides, steel valve seats, and chromoly retainers provide durability for demanding street performance, muscle car, hot rod, street/strip, and restomod applications.

Delivered fully assembled with valves installed, these cylinder heads simplify installation while providing compatibility for hydraulic roller camshaft combinations commonly found in modern Small Block Ford performance builds.

Whether you're upgrading a Fox Body Mustang, building a 347 stroker, restoring a classic Ford muscle car, or assembling a performance Windsor-based engine, these assembled aluminum cylinder heads provide the airflow capacity and durability needed for reliable horsepower gains.

 

Cylinder Head Technology
Designed with 185cc intake runners, 60cc heart-shaped combustion chambers, rectangular intake and exhaust ports, and hydraulic roller-compatible valvetrain components, these assembled aluminum cylinder heads are engineered to improve airflow and combustion efficiency in Small Block Ford applications. Bronze valve guides, steel valve seats, stainless steel valves, and chromoly retainers provide durability for long-term performance use.

Performance Benefits
The 185cc runner design helps maintain strong intake velocity while supporting increased airflow, making these cylinder heads ideal for street performance, muscle car, hot rod, and stroker engine combinations. Aluminum construction helps reduce weight and dissipate heat efficiently, supporting improved throttle response, stronger torque production, and increased horsepower potential.

Specs

Assembled Yes
CNC Ported No
Combustion Chamber Style Heart
Combustion Chamber Volume 60 cc
Deck Height Standard
Deck Thickness Standard
Exhaust Crossover No
Exhaust Port Location Standard
Exhaust Port Shape Rectangle
Exhaust Valve Material Stainless Steel
Finish Natural
Grade Type Performance
Intake Port Location Standard
Intake Port Shape Rectangle
Intake Runner Volume 185 cc
Intake Valve Material Stainless Steel
Material Aluminum
Quantity Sold Individually
Valve Guide Material Bronze
Valve Springs Included No
Valves Included Yes

Engine Fitment

COMPATIBLE WITH
FORD SMALL BLOCK WINDSOR V8
• 4.7L / 289 in³
• 5.0L / 302 in³
• 5.8L / 351 in³ (351W Windsor)

COMMON VEHICLE APPLICATIONS
Ford Mustang (1965–1995 289 / 302 / 351W equipped)
Ford F-Series (Small Block Windsor equipped)
Ford Bronco (Small Block Windsor equipped)
Ford Falcon / Fairlane (Small Block Windsor equipped)
Mercury Cougar (Small Block Windsor equipped)

NOTES
• Designed for Small Block Ford applications
• Configured for hydraulic roller camshaft combinations
• Fully assembled cylinder head
• Sold individually (quantity of 2 required per engine)
• Verify piston-to-valve clearance and valvetrain compatibility before installation
• Verify intake manifold compatibility before installation
• Not compatible with Ford Modular, Coyote, LS, LT, or Chevrolet engines
• Will not fit 351C Cleveland, 351M, 400M, FE, or 385-series Big Block Ford engines.

Q&A

Are these cylinder heads fully assembled?
Yes, these heads come assembled with valves installed and are ready for final engine assembly.

What size intake runners do these heads use?
These cylinder heads feature 185cc intake runners.

What size combustion chambers do these heads use?
They utilize 60cc heart-shaped combustion chambers.

Are these designed for hydraulic roller camshafts?
Yes, these heads are configured for hydraulic roller camshaft applications.

Are these a good choice for a Ford 302?
Yes, the 185cc runner design is well suited for performance-oriented 302 and 306 builds.

Can these heads be used on a 347 stroker?
Yes, 347 stroker combinations are among the most common applications for 185cc Small Block Ford heads.

Will these heads fit a 351 Windsor?
Yes, they are commonly used on compatible 351 Windsor performance builds.

What materials are used in the valvetrain?
The heads feature stainless steel valves, bronze valve guides, steel valve seats, and chromoly retainers.

Are these suitable for street performance applications?
Yes, they are designed for street performance, muscle car, hot rod, restomod, and street/strip use.

Why choose aluminum cylinder heads?
Aluminum heads reduce weight and dissipate heat more efficiently than traditional cast iron castings.

Are these compatible with Coyote engines?
No, these heads are designed for Small Block Ford applications and are not compatible with Coyote engines.

What is the difference between hydraulic roller and flat tappet heads?
Hydraulic roller cylinder heads are configured to support hydraulic roller valvetrain combinations commonly used in modern performance Small Block Ford builds.

Emissions Notice

This product is legal for off road use and non pollution controlled vehicles (1965 & older); however, it has not been tested or approved by the California Air Resources Board (CARB) for highway vehicles in the state of California. By purchasing this product, buyer agrees it will not be used on pollution controlled vehicles in California, or in a state with similar emissions regulations.