COMP Cams POW351090 Compound Angle Piston Vise Blue Anodized Aluminum Engine Building Tool

The COMP Cams / Powerhouse Products POW351090 Compound Angle Piston Vise is a professional-grade engine building tool designed to securely hold pistons during inspection, porting, milling, and assembly operations. Built from aluminum with a durable blue anodized finish, this vise is engineered for both novice and professional engine builders who demand precision and repeatability.

What sets this piston vise apart is its compound angle design, which allows the piston to rotate not only from front to back, but also from side to side — a critical feature when working with Ford and Big Block Chevy pistons. Once the setup is established, subsequent pistons simply drop in and lock into the same position.

The updated curved jaw design increases contact with the piston skirt area while carefully avoiding the delicate ring lands, providing a more secure grip across a wide range of piston sizes — from small displacement engines up to large-bore V8 applications. The unit also includes provisions for fastening directly to a milling table, making it suitable for precision operations such as cutting valve pockets.

Key Features:

• Compound angle articulation — rotates front-to-back and side-to-side for full piston access
• Locates and holds pistons via the wrist pin openings for consistent, repeatable positioning
• Curved jaw design grips the piston skirt without contacting ring lands
• Compatible with a wide range of piston sizes from small engines to large-bore V8s
• Supports pistons in the upside-down position for balancing or lightening work
• Mounting provisions for securing to a milling table for precision machining operations
• Blue anodized aluminum construction — rigid, lightweight, and corrosion resistant
• Maximum piston diameter: 4.600 inches

The POW351090 is sold as a single compound angle piston vise and is an essential tool for any serious engine rebuild or performance build requiring accurate, repeatable piston work.