Speedmaster M8 8mm Base to 3/8" Rocker Arm Screw In Stud Kit (1.380" Above Hex) Chevy GM LS

The Speedmaster PCE260.1009 is an M8 8mm base to 3/8" rocker arm screw-in stud kit engineered for Chevy and GM LS engine platforms. This precision hardware kit provides the correct stud geometry with a 1.380" measurement above the hex to ensure proper rocker arm alignment and valve train integrity on LS-series applications.

This stud kit is essential for LS engine builders and performance enthusiasts who require OEM-equivalent or upgraded rocker arm studs for engine assembly and rebuild work. The M8 base to 3/8" conversion design accommodates specific rocker arm bolt hole configurations found in LS engine heads. Whether you're performing routine maintenance, a full engine rebuild, or installing aftermarket rocker arms, this kit delivers the correct dimensions and quality needed for reliable valve train operation and long-term durability.

Key Features & Benefits

• M8 to 3/8" Conversion: Converts M8 8mm base threads to 3/8" rocker arm stud size for LS engine compatibility.
• 1.380" Above Hex Measurement: Precise height specification ensures correct rocker arm geometry and valve train alignment.
• LS Engine Specific: Purpose-designed for Chevy and GM LS-series engine applications.
• Screw-In Stud Design: Threaded base allows secure installation into engine block or cylinder head.

Specifications

Ideal Applications

• LS engine rebuilds and performance builds
• Rocker arm and valve train assembly
• Engine head upgrades and modifications
• OEM and aftermarket rocker arm installation