Speedmaster Pontiac 455 OEM 2 Bolt to 4 Bolt Straight Billet Steel Main Caps PCE289.1013

The Speedmaster Pontiac 455 OEM 2 Bolt to 4 Bolt Straight Billet Steel Main Caps (PCE289.1013) are precision-machined conversion components designed to upgrade classic Pontiac 455 engines. These billet steel main caps allow you to convert your original 2-bolt main design to a stronger 4-bolt configuration, providing enhanced crank support and structural rigidity for high-performance and rebuild applications.

Crafted from solid billet steel and engineered to OEM specifications, these straight-style main caps deliver reliable fitment and durability. The conversion upgrade is ideal for engine rebuilds, performance upgrades, and resto-mod projects where increased bottom-end strength is desired. Whether you're restoring an original Pontiac or building a period-correct high-output engine, these caps provide the upgrade path from the lighter 2-bolt design to the more robust 4-bolt architecture.

Key Features & Benefits

• 2-to-4 Bolt Conversion: Upgrades original 2-bolt mains to a stronger 4-bolt configuration for increased crank support.
• Billet Steel Construction: Precision-machined from solid billet steel for durability and reliability in engine builds.
• OEM Specification Design: Engineered to original equipment manufacturer specifications for direct fitment.
• Straight-Style Configuration: Classic straight-cap design maintains OEM appearance and functionality.
• Performance-Focused Application: Ideal for engine rebuilds, performance upgrades, and restoration projects.

Specifications

Ideal Applications

• Pontiac 455 engine rebuilds and restorations
• Classic car and muscle car engine upgrades
• High-performance bottom-end conversions
• Resto-mod projects requiring structural reinforcement