Speedmaster PCE287.1027 Chevy BBC 454 Main Bolt Kit 4-Bolt 12-Point

The Speedmaster PCE287.1027 is a premium main bolt kit designed specifically for Chevy big block 454 engines with 4-bolt main caps. This complete fastener kit provides the strength and reliability needed for high-performance and racing applications.

Key Features:

• Constructed from aircraft-quality 8740 chromoly steel for maximum strength
• 12-point bolt heads for improved grip and torque application
• Tensile strength rated up to 190,000 PSI for extreme durability
• Precision ground and thread-rolled after heat treatment for exact tolerances
• Ensures consistent torque readings and reliable clamping force
• Includes 4130 heat-treated, parallel-ground washers
• Complete kit with high-strength 12-point nuts included

These race-quality main bolts are engineered to secure the main bearing caps on 4-bolt main BBC 454 engines, providing superior clamping force compared to stock fasteners. The chromoly construction and precision manufacturing make this kit ideal for high-horsepower builds, stroker motors, and racing applications where engine reliability is critical.