Speedmaster 1-274-007 I-Beam Connecting Rods 6.000" Forged 5140 Steel SBC 350 with ARP 2000 Bolts

The Speedmaster 1-274-007 I-beam connecting rods are engineered for high-performance Chevy small block 350 applications, combining proven I-beam design with advanced strength features typically found in H-beam rods. These premium connecting rods are manufactured from forged 5140 steel and undergo rigorous quality control including X-ray inspection and ultrasonic testing to ensure structural integrity.

Key Specifications:

• Center-to-center length: 6.000 inches
• Big end bore: 2.100 inches
• Pin bore: 0.927 inches
• Material: Forged 5140 steel
• Fasteners: ARP 2000 series connecting rod bolts

Performance Features:

• One-rib cap design provides enhanced strength and superior bearing support
• Polished beam surfaces eliminate stress risers and potential failure points
• Profiled for long stroke applications with optimized crankshaft clearance
• Shot peened and stress relieved on all surfaces for maximum durability
• Precision CNC-machined to exacting tolerances

ARP 2000 Series Bolts:

• Heat-treated for superior strength and reliability
• Rolled threads provide up to 10 times more fatigue strength than cut threads
• Engineered to handle extreme cylinder pressures in high-performance engines
• Far superior to OEM fasteners in durability and clamping force

These connecting rods are ideal for street performance builds, mild to moderate street/strip applications, and engine rebuilds requiring reliable, affordable performance upgrades over stock components.