BoostLine Connecting Rods from Summit - Engine Builder Magazine

BoostLine Connecting Rods from Summit

BoostLine Connecting Rods are designed to survive under big boost and large hits of nitrous oxide. The 4340 steel rods have a hybrid design that combines the strength of an I-beam rod with the light weight of an H-beam rod. They also have triangulated pockets where the big end meets the beam area. This arrangement drastically increases the rod’s resistance to bending by 60% and reduces in-tension stress by 20% compared to a typical H-beam design. 

Boostline rods are individually measured and combined into custom-matched sets based on overall length, big- and small-end diameter, rotating and reciprocating mass, and total mass. For a typical set of BoostLine 6.125 inch rods for an LS engine, center-to-center length variation is less than 0.0002 inch while total mass variation is just one gram.

Other features include:
• Heat-treated, shot-peened, and fitted with ARP-2000 cap screws before final finish machining
• High-quality Ampco bushing material used in the small end
• Pin clearance between .0009- and .0011-inch allows engine builders to spec custom wrist pins for additional clearance
• Detailed inspection report with critical measurements included to save installation time

BoostLine connecting rods are rated up to 1,000 horsepower for four-cylinder engines, 1,500 horsepower for six-cylinder engines, and 2,000 horsepower for V8 engines. They’re available for popular GM, Ford, and Mopar V8s as well as BMW, Honda, Mitsubishi, Nissan, Subaru, Toyota, and VW engines.

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