Speedmaster PCE274.1089 I-Beam 6.800" Connecting Rods 4340 Chromoly BBC Chevy 454

The Speedmaster PCE274.1089 I-Beam connecting rods are precision-engineered race components designed specifically for Chevy Big Block 454 engines. Manufactured from aircraft-grade 4340 chromoly steel, these connecting rods deliver exceptional strength and reliability for high-performance and racing applications.

Key Specifications:

• Center-to-center length: 6.800 inches
• Big end bore: 2.200 inches
• Pin end bore: 0.990 inches
• Material: Aircraft 4340 chromoly steel
• Bronze bushing at pin end
• Application: Chevy BBC 454

Performance Features:

• I-beam profile with one-rib cap design for superior strength and bearing support
• Profiled beam geometry provides clearance for long-stroke crankshaft configurations
• Polished beam surfaces eliminate stress risers and potential failure points
• High-strength cap screw bolts maximize clamping force and power handling capability
• Shot peened surfaces for enhanced fatigue resistance
• Stress relieved to minimize internal stresses
• 100% X-ray and ultrasonic tested for quality assurance

These connecting rods incorporate advanced design elements found in both I-beam and H-beam architectures, delivering the optimal balance of strength, weight, and durability for demanding race engine builds. Each rod undergoes rigorous quality control testing to ensure consistent performance and reliability in high-RPM, high-horsepower applications.