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Vehicle Info NeededDragon Slayer DS 225 Series Cylinder Heads 225cc Intake Ports
Ships on Sep 23, 2026
Lowest Price Guarantee- Dragon Slayer DS 225 Series Cylinder Heads
- 225cc Intake Ports
- 68cc Combustion Chambers
- 2.080'' Intake / 1.600'' Exhaust Valves
- 1.550'' Dia. Springs - 240# Seat Pressure
- Steel Retainers
- Angle Plug
- Assembled, 2/pkg.
Cylinder Head Specifications - Intake Port Volume: 225cc
- Combustion Chamber Volume: 68cc
- Valves: 2.080' dia. x 4.965' o.a.l. Intake / 1.600' dia. x 4.965' o.a.l. Exhaust ( 11/32' Stem Diameter )
- Valve Springs: 1.550' Diameter - Open Pressure: 550 lbs.; Closed Pressure: 240 lbs.; Installed Height: 1.950'; Max Lift: .700'
- Spring Retainers: 1.550' 10° Steel
- Rocker Studs: 7/16'
- Guide Plates: 5/16'
- Valve Seals: 11/32'
- Spark Plug Configuration: AngledFacts and Related Components
- Torque Heads: 70 ft-lb.
- Torque Rocker Studs: 40-45 ft-lb.
- Intake Gasket: Fel-Pro p/n 375-1206, Cometic p/n 245-C5414
- Head Gasket: Fel-Pro p/n 375-1003 (350ci) / 375-1004 (400ci) or Cometic p/n 245-C5399 (350ci) / 245-C5403 (400ci)
- Exhaust Gasket: Fel-Pro p/n 375-1406 or Cometic p/n 245-C5415
- Head Bolts: ARP p/n 070-134-3601 or Manley p/n 660-42313
- Head Bolt Washers: MANLEY p/n 660-42102
- Head Studs: ARP p/n 070-234-4301 (12-point)
- Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
- Valve Angle: 23°
- Angle Milling: .0078' per cc
- Flat Milling: .0060' per cc
- Pushrod Slots: Standard
- Stud Girdle: Standard
- Rocker Arms: Standard (optional, T&D 2256 or Jesel KPS 01001)
- Lifters: Standard
- Exhaust Pattern: Standard
- Valve Centerline: Standard
- Spring Pockets: May not be cut any larger or deeper than 1.550'
- Accessory Bolt Holes are Drilled
- Recommended Intake Manifold: Brodix BM 1000 (p/n 158-BM1000) / HV 1000 (p/n 158-HV1000) / HV 1002 (p/n 158-HV1002) / SE 100 (p/n 158-SE100)
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
A Ported Head that Flows 300+ CFM at .600 in. Lift!
The Brodix Dragon Slayer Series Small Block Chevy Aluminum Cylinder Heads are the definition of economical out-of-the-box horsepower! The 23-degree Dragon Slayer DS 225 Series cylinder head comes standard with CNC ported combustion chambers allowing this port to flow over 300 cfm @ .600 in. cam lift. Every casting is poured from A-356 virgin aluminum and tested before Brodix utilizes its in-house processes such as finish machining and heat treating to assure that you receive the best products for your hard-earned money.
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Solid, phosphorous bronze guides are used to reduce valve leakage and oil consumption. The ductile iron valve seats are installed for use with unleaded fuel. This head is also milled and drilled on the ends for accessory mounts and uses the traditional perimeter-style 4-bolt pattern valve cover and only offered with the straight spark plug angle configuration. The best thing about this big flowing head is that all standard components such as rockers, lifters, and intake manifold may be used!The Brodix SBC Dragon Slayer Series Aluminum Cylinder Heads are engineered for small block Chevy enthusiasts who demand maximum airflow, race-proven durability, and serious horsepower potential. Designed specifically for high-performance SBC combinations, the Dragon Slayer series has earned a reputation for delivering exceptional cylinder head performance in both street and competition applications. Whether you’re building a high-revving drag racing engine or a powerful street machine, these aluminum cylinder heads provide the airflow and combustion efficiency needed to unlock your engine’s full potential.
Built from premium aluminum castings, Brodix Dragon Slayer heads are precision-machined to ensure optimal port alignment, chamber consistency, and long-term reliability. For performance builders focused on horsepower gains and torque capacity, upgrading to a high-flow SBC cylinder head is one of the most effective ways to improve engine output.
Performance Benefits & Key Features
Brodix SBC Dragon Slayer Series Aluminum Cylinder Heads are designed with optimized intake and exhaust port geometry to maximize airflow and volumetric efficiency. Improved airflow directly translates to increased horsepower, stronger mid-range pull, and enhanced throttle response. Performance enthusiasts often consider specifications such as intake runner volume, combustion chamber size, valve sizing, and deck thickness when selecting cylinder heads—and the Dragon Slayer series delivers competitive numbers across the board.
The lightweight aluminum construction improves heat dissipation compared to traditional iron heads, helping maintain stable operating temperatures under demanding conditions. Enhanced cooling and precise machining support higher compression ratios and aggressive camshaft profiles, making these heads ideal for high-performance street builds and serious drag racing applications.
These performance cylinder heads are well-suited for naturally aspirated engines as well as forced induction setups where airflow efficiency and structural integrity are critical. Builders targeting strong peak horsepower numbers while maintaining consistent power delivery across the RPM range will appreciate the engineering behind this series.
Fitment, Compatibility & Applications
The Dragon Slayer Series heads are designed for small block Chevy compatibility, making them a direct fit for a wide range of GM platforms configured for SBC engines. Popular applications include classic Chevrolet Camaro, Chevelle, Nova, and C10 trucks, as well as street rods and custom race cars built around the SBC architecture.
Whether you’re assembling a stroker motor for a pro-touring build or refreshing a competitive bracket racing engine, these aluminum cylinder heads integrate seamlessly with compatible intake manifolds and valvetrain components. Their versatility supports both street performance and track-focused builds.
When you’re ready to elevate your small block Chevy combination, explore the Brodix SBC Dragon Slayer Series Aluminum Cylinder Heads at JEGS and build your engine with confidence, precision, and proven performance.
EASY KITS
BRODIX
Dragon Slayer DS 225 Series Cylinder Head Kit 225cc Intake Ports
Part Number : 158-1321001K
BRODIX
Part Number : 158-1321001K
