BBC 6.700 H-Beam Rods 4340 w/ARP2000 Bolts

The MANLEY BBC 6.700 H-Beam Rods 4340 with ARP2000 Bolts are purpose-built connecting rods designed for serious big-block Chevy engine builders and high-performance enthusiasts. These rods address a critical weakness in any stroker or heavily modified BBC platform: the connecting rod must safely transfer combustion forces from the piston to the crankshaft under extreme cylinder pressures. Stock BBC rods were never engineered for modern boost levels, nitrous injection, or extended rpm ranges, making quality aftermarket rods essential for any power adder application or competition engine.

MANLEY's H-beam design maximizes strength-to-weight ratio by distributing material where loads concentrate—along the upper and lower beam sections—while eliminating excess weight in non-critical areas. The 4340 forged steel material provides superior tensile strength and fatigue resistance compared to cast iron or inferior alloy rods, enabling these rods to withstand repeated high-stress cycles without permanent deformation or catastrophic failure. The ARP2000 fasteners represent a critical upgrade; these premium bolts offer higher preload retention and clamping force than factory hardware, preventing rod cap separation and bearing crush issues that plague inadequately fastened assemblies at elevated boost or nitrous levels.

These rods excel in BBC applications ranging from street turbo and supercharged builds to dedicated drag racing and road race engines operating in the 7,000+ rpm zone. With a rod length of 6.700 inches, they are specifically designed to meet the demands of high-performance setups. Whether you're building a street machine or a competition engine, these rods are a reliable choice for maximizing performance and durability.