Proform Parts 67568 Stud Boss Cutter Tool for Roller Rocker Installation

The Proform Parts Stud Boss Cutter Tool is designed to machine cylinder head stud bosses to accommodate screw-in studs for roller rocker arm conversions on factory heads. This precision cutting tool eliminates interference issues when upgrading to aftermarket roller rockers that require screw-in studs instead of factory press-in studs.

Key Features:

• Precision boss cutter for clean, accurate stud boss machining
• Includes adapter and guide for use with standard arbor press
• Allows proper clearance for screw-in stud hex nut flanges
• Works with most small block and big block cylinder heads
• Creates consistent, professional results for roller rocker conversions

Installation Notes:

• Attach the boss cutter to an arbor press using the included adapter/guide
• Position cylinder head boss underneath the cutting blade
• Angle the cylinder head correctly before cutting to ensure proper clearance
• Finished cut diameter must match or exceed the screw-in stud hex nut flange diameter

This tool is essential for engine builders and performance enthusiasts converting to roller rocker arms on factory cylinder heads, ensuring proper fitment and clearance for screw-in stud installation.