Aluminum Assembled Cylinder Head – GM LS Compatible – 259cc

Description

Aluminum Assembled Cylinder Head – GM LS Compatible – 259cc – Professional Overview

The Aluminum Assembled Cylinder Head – GM LS Compatible – 259cc is part of Engines’ Muscle Series range of performance cylinder heads. It is designed for compatible GM LS engines and provides a complete assembled cylinder-head solution for performance builds, engine upgrades, and LS-based muscle car projects.

The cylinder head uses an aluminum construction with a natural finish and standard port locations. Its intake side features a 259cc runner volume and rectangular port shape, while the exhaust side uses a 102cc runner volume with a round port shape.

The head is supplied fully assembled, which means the buyer receives the cylinder head with its primary valvetrain components already installed. This includes valve springs, retainers, locks, valve guides, valve stem seals, and other specified components.

BluePrint Engines identifies this model with manufacturer part number PS8015. The manufacturer also states that the cylinder head is designed and produced by BluePrint Engines and is backed by a 12-month limited warranty.

For LS enthusiasts who are building or upgrading an engine, this configuration provides a combination of large runner volume, substantial valve sizing, aluminum construction, and an assembled valvetrain in a single cylinder-head package.

Compatibility, Applications, and Engine Integration

This cylinder head is designed for GM LS-compatible applications. The product information identifies the intake port location as standard and the exhaust port location as standard, helping define the intended configuration of the head.

The intake port uses a rectangular shape with a 259cc runner volume. On the exhaust side, the head uses a round port with a 102cc runner volume. These dimensions are important considerations when matching the cylinder head to an LS engine’s intake and exhaust components.

The cylinder head is also configured for a hydraulic roller camshaft and uses an oiling system through the pushrods. Its valve cover mounting style is center bolt, while accessory bolt holes are drilled.

Because LS engines can be configured in numerous combinations, buyers should confirm the specific requirements of their engine and supporting components before ordering. This includes checking intake, exhaust, valvetrain, accessory, and installation requirements for the intended application.

The manufacturer also specifies that the head includes 10mm accessory bolt holes machined on the ends of the heads.

Construction, Valvetrain, and Performance

The cylinder head is constructed from aluminum, providing a lightweight alternative to comparable cast-iron cylinder-head configurations. The supplied finish is natural aluminum.

The combustion chamber volume is 69cc, while the intake and exhaust runners measure 259cc and 102cc respectively. The intake valves measure 2.165 inches in diameter, and the exhaust valves measure 1.600 inches.

The valve seats are machined using a 5-angle seat machine style, with chrome nickel seat material. The valve guides are made from manganese bronze, and the valve stem seals use Viton fluoroelastomer material.

The valvetrain is designed around a maximum specified valve lift of 0.650 inch. The head uses dual valve springs, with the manufacturer listing spring pressure specifications for both open and closed positions.

The outer spring diameter measures 1.295 inches. A damper spring is included, and the package also includes chromemoly steel retainers and 7-degree locks.

These components provide a complete foundation for compatible performance-oriented LS applications without requiring the buyer to source each major cylinder-head valvetrain component separately.

Key Features and Benefits

One of the main advantages of this cylinder head is its fully assembled configuration. The head is supplied with the specified valves and valvetrain components, helping simplify component sourcing for an LS engine project.

The 259cc intake runner volume provides a substantial intake passage for applications where the cylinder-head configuration and overall engine combination call for this specification. The 102cc exhaust runner complements the intake configuration while maintaining the specified standard exhaust port location.

The 69cc combustion chamber provides another important specification when selecting a cylinder head because combustion-chamber volume affects the overall engine combination and must be considered alongside piston design, deck height, and gasket selection.

The head also features 2.165-inch intake valves and 1.600-inch exhaust valves, providing clearly defined valve dimensions for builders planning their engine combination.

Its aluminum construction, assembled valvetrain, hydraulic roller compatibility, and supporting valve components make the head a practical option for compatible LS-based performance builds.

Who This Cylinder Head Is Best For

This cylinder head is best suited to LS engine builders, muscle car enthusiasts, performance workshops, and vehicle owners working with compatible GM LS applications.

It can be a suitable choice for buyers who want:

• A GM LS-compatible aluminum cylinder head
• A fully assembled cylinder-head package
• Large 259cc intake runners
• 69cc combustion chambers
• 2.165-inch intake valves
• 1.600-inch exhaust valves
• A hydraulic roller camshaft configuration
• An integrated performance-oriented valvetrain
• A BluePrint Engines cylinder-head solution

It is particularly useful for buyers who prefer purchasing an assembled cylinder head instead of sourcing valves, springs, retainers, locks, and seals individually.

As with any performance engine component, the head should be matched to the complete engine combination rather than selected based on one specification alone. Intake manifold compatibility, exhaust configuration, camshaft requirements, piston-to-valve clearance, compression ratio, and the intended operating range should all be considered during engine planning.

Technical Specifications

Installation and Supporting Components

The cylinder head is supplied as an assembled component, but installation into a complete LS engine still requires consideration of the surrounding engine components.

Before installation, buyers should confirm that the cylinder head’s intake and exhaust port configuration, valve dimensions, valvetrain specifications, valve lift capability, accessory mounting provisions, and valve-cover arrangement are compatible with the intended engine.

The manufacturer specifies a hydraulic roller camshaft configuration and through-pushrod oiling. The head does not include rocker arms or rocker-arm studs, so these components should be evaluated as part of the complete engine build.

The product is sold individually, making it suitable for applications where a single replacement head is required or where a builder is assembling a complete LS cylinder-head combination.

For a broader engine project, this cylinder head can be considered alongside LS crate engines, LS engine components, performance valvetrain components, intake systems, and other BluePrint Engines products to create a compatible engine package.

Ordering Confidence and Warranty

BluePrint Engines identifies this cylinder head as a Muscle Series component designed and produced by the manufacturer. The product is supplied fully assembled with the specified performance components and carries a full 12-month limited warranty according to the supplied product information.

The manufacturer part number PS8015 provides a specific reference for identifying the product when checking compatibility, purchasing replacement components, or discussing the application with a supplier.

Because this is a performance-oriented cylinder head, buyers should confirm the complete engine combination before ordering. Matching the cylinder head to the intake manifold, exhaust system, camshaft, pistons, valvetrain, and intended application is essential for a successful LS build.

Frequently Asked Questions

Is this cylinder head compatible with GM LS engines?

Yes. The product is specifically described as a GM LS-compatible aluminum cylinder head from BluePrint Engines’ Muscle Series. However, LS engines can have different configurations, so buyers should verify the specific application and supporting components before ordering.

What is the intake runner volume?

The intake runner volume is 259cc. The intake port has a rectangular shape and a standard port location. This specification should be considered alongside the intake manifold and overall engine combination when selecting components for an LS build.

What size valves does this cylinder head use?

The head uses a 2.165-inch intake valve and a 1.600-inch exhaust valve. Both intake and exhaust valves are included with the assembled cylinder head.

What is the combustion chamber volume?

The combustion chamber volume is 69cc. This specification is important when calculating the overall engine combination because combustion-chamber volume contributes to the final compression ratio.

Does the cylinder head come fully assembled?

Yes. The product is supplied as a fully assembled cylinder head. The package includes valve springs, retainers, locks, valve guides, valve stem seals, valves, and other specified components. Rocker arms and rocker-arm studs are not included.

What valve spring and valvetrain components are included?

The cylinder head includes dual valve springs, damper springs, chromemoly steel retainers, and 7-degree locks. The valve guides and Viton fluoroelastomer valve stem seals are also included. The specified maximum valve lift is 0.650 inch.

What warranty comes with the cylinder head?

The product is backed by a 12-month limited warranty from BluePrint Engines according to the supplied product information. Buyers should review the applicable warranty terms for coverage details.