Chevy Small Block Straight Plug Hydraulic Roller Assembled Aluminum Cylinder Head

Upgrade your Gen I Small Block Chevy engine with a fully assembled aluminum cylinder head designed for hydraulic roller camshaft applications. Featuring 198cc intake runners, 64cc combustion chambers, and 2.020" intake / 1.600" exhaust valves, these performance cylinder heads are engineered to deliver improved airflow, throttle response, and horsepower potential for street performance, muscle car, hot rod, and street/strip builds.

Designed for modern hydraulic roller cam combinations, these Small Block Chevy aluminum heads help support increased airflow and improved combustion efficiency compared to many factory cylinder heads. The optimized runner and chamber design contributes to stronger torque production, improved throttle response, and enhanced overall engine performance throughout the RPM range.

The straight plug configuration maintains compatibility with many traditional Small Block Chevy header and spark plug arrangements, making these cylinder heads an excellent choice for a wide range of performance SBC builds. Lightweight aluminum construction helps reduce vehicle weight while dissipating heat more efficiently than traditional cast iron cylinder heads.

Delivered fully assembled with valves, hydraulic roller valve springs, retainers, locks, and seals, these cylinder heads simplify installation while providing the performance foundation needed for 350 Chevy, 383 stroker, and other Gen I Small Block Chevy engine combinations.

Whether you're building a hydraulic roller street engine, restoring a classic muscle car, upgrading a hot rod, or assembling a performance-focused SBC combination, these assembled aluminum cylinder heads deliver the airflow, durability, and performance enthusiasts demand.

 

Cylinder Head Technology
Designed with 198cc intake runners, 64cc combustion chambers, and 2.020" intake / 1.600" exhaust valves, these assembled aluminum cylinder heads are engineered to improve airflow and combustion efficiency in Gen I Small Block Chevy applications. The straight plug configuration maintains compatibility with many traditional Small Block Chevy header and spark plug arrangements while hydraulic roller valve springs support modern performance camshaft combinations.

Performance Benefits
The performance-oriented port design helps support improved cylinder filling, increased airflow, stronger mid-range torque, and greater horsepower potential. Lightweight aluminum construction helps dissipate heat more efficiently than cast iron while reducing vehicle weight, making these cylinder heads a popular upgrade for street performance vehicles, muscle cars, hot rods, and street/strip applications.

COMPATIBLE WITH
CHEVROLET SMALL BLOCK V8 GEN. I
• 4.3L / 262 in³
• 4.3L / 265 in³
• 4.4L / 267 in³
• 4.6L / 283 in³
• 4.9L / 302 in³
• 5.0L / 305 in³
• 5.0L / 307 in³
• 5.4L / 327 in³
• 5.7L / 350 in³
• 6.6L / 400 in³

COMMON VEHICLE APPLICATIONS
Chevrolet Camaro
Chevrolet Chevelle
Chevrolet Nova
Chevrolet El Camino
Chevrolet Impala
Chevrolet C10
Chevrolet C/K Series Trucks

NOTES
• Fits Gen I Small Block Chevy engines only (1955–1995).
• Fits perimeter-bolt valve covers and pre-Vortec intake manifolds.
• Straight plug cylinder head design
• Designed for hydraulic roller camshaft applications
• Fully assembled cylinder heads
• Verify component compatibility before installation
• Not compatible with LS, LT, or Big Block Chevy engines
• Cylinder head sold individually (purchase quantity of 2 required for complete engine).

SPECIFICATIONS
Assembled: Yes
CNC Ported: No
Combustion Chamber Style: Heart
Combustion Chamber Volume: 64 cc
Deck Height: Standard
Deck Thickness: Standard
Exhaust Crossover: No
Exhaust Port Height: 1.400 in.
Exhaust Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Width: 1.400 in.
Exhaust Valve Diameter: 1.600 in.
Exhaust Valve Material: Stainless Steel
Finish: Natural
Grade Type: Performance
Guide Plate Material: Chromoly Steel
Intake Port Height: 2.100 in.
Intake Port Location: Standard
Intake Port Shape: Rectangle
Intake Port Width: 1.180 in.
Intake Runner Volume: 198 cc
Intake Valve Diameter: 2.020 in.
Intake Valve Material: Stainless Steel
Material: Aluminum
Quantity: Sold Individually
Spark Plug Style: Straight
Valve Guide Material: Bronze
Valve Seat Material: Steel
Valve Springs Included: No
Valves Included: Yes
Weight: 19 lbs.