Speedmaster 10 Degree 11/32" Chromoly Valve Locks Keepers PCE269.1010 +0.050" Install Height

The Speedmaster PCE269.1010 valve locks (also called keepers) are precision-engineered chromoly components designed for high-performance engine assembly. These 10-degree angled locks feature a +0.050" install height and 11/32" diameter, meeting tight OEM specifications for valve retainer systems in performance and racing engines.

Chromoly construction provides superior strength and durability compared to standard steel, ensuring reliable valve retention under extreme combustion pressures and high-RPM operation. The 10-degree geometry and exact install height are critical for proper valve seal seating and preload consistency, making these keepers essential for builds where precision and performance matter. Ideal for engine builders, performance shops, and serious enthusiasts assembling small-block engines where OEM fitment and reliability are non-negotiable.

Key Features & Benefits

• Chromoly Material: Premium chromoly construction delivers superior strength and wear resistance for high-RPM engine applications.
• 10-Degree Angle: Precisely engineered 10-degree geometry ensures proper valve retainer engagement and load distribution.
• +0.050" Install Height: Exact install height specification maintains critical valve preload and seating geometry for reliable operation.
• 11/32" Diameter: Standard sizing fits OEM valve retainer systems and small-block engine applications.
• Precision Engineering: Tight tolerances guarantee consistent fitment across your engine assembly for optimal performance.

Specifications

Ideal Applications

• High-performance small-block engine builds and racing applications
• OEM-specification engine assembly and restoration
• Performance engine shops and professional builders
• Serious enthusiasts requiring precision valve train components