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Top Street Performance

Chevy Small Block Angled Plug Hydraulic Roller Assembled Aluminum Cylinder Head

Chevy Small Block Angled Plug Hydraulic Roller Assembled Aluminum Cylinder Head

SKU: JM4121

$605.00
$605.00
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

  • Fits Chevy Small Block V8 engines 262–400 including 350 and 383 stroker applications
  • 198 cc intake runners, 64 cc chambers, 2.020 in./1.600 in. valves for improved airflow and power potential
  • Assembled with performance valves, springs, retainers, locks and seals for easier installation
  • Angle Plug aluminum cylinder head design for street, strip and performance engine combinations

Description

Upgrade your Small Block Chevy with assembled aluminum cylinder heads engineered to improve airflow, combustion efficiency, and horsepower potential. Featuring 198 cc intake runners, 64 cc combustion chambers, 2.020 in. intake / 1.600 in. exhaust valves, these heads are built for street, strip, and performance engine builds that need better breathing than stock castings.

Improved Airflow & Power Potential
Optimized runner and chamber design helps move more air through the engine, improving throttle response, torque, and top-end horsepower potential across the RPM range.

Assembled Valve Train Setup
Delivered assembled with matched valves, springs, retainers, locks, and seals where specified, helping simplify installation for hydraulic roller camshaft applications.

Aluminum Construction
Lightweight aluminum construction reduces weight compared to factory iron heads while improving heat dissipation for more consistent performance under demanding conditions.

Built for Street & Performance Builds
Ideal for performance rebuilds, restorations, and upgraded engine combinations. Always verify piston-to-valve clearance, camshaft compatibility, intake manifold fit, and header clearance before final installation.

Specs

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 Angled
Valve Guide Material Bronze
Valve Seat Material Steel
Valve Springs Included No
Valves Included Yes
Weight 19 lbs.

Engine Fitment

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 (1967–1995 SBC equipped)
Chevrolet Chevelle (1964–1977 SBC)
Chevrolet Nova (1962–1979 SBC)
Chevrolet C10 / C/K Trucks (1960–1995 SBC)
Chevrolet Impala / Caprice (SBC equipped)

NOTES

Fits Gen I Small Block Chevy engines (1955–1995).

Fits perimeter-bolt valve covers and pre-Vortec intake manifolds.

Compatible with common SBC stroker builds (383 / 406).

Angle plug design may require compatible headers or spark plug wire routing for proper clearance.

Cylinder head sold individually (purchase quantity of 2 required for complete engine).

Verify intake manifold type, valve lift and spring requirements, and piston-to-valve clearance.

Not compatible with LT1 / LT4 Gen II engines, LS-based engines, or Big Block Chevy engines.

Q&A

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.