Speedmaster 12 Point 7/16 8640-8740 Connecting Rod Bolts 1 Pc
746-PCE275.1013
Product Q&A
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Procomp Electronics connecting rod bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up to ten times more fatigue strength. This makes them far superior to standard OEM fasteners in terms of durability, and fully capable of handling the extra stress of high-combustion engines.
Specifications:
I have a set of rods dont know what they are.have sp 8640 on the 7/16 bolts.is for bbc 6.385.please help need to replace 1 .thank u all
I'm building an all forged 13:1 383 planning on making 575-600 HP at 74-7600 RPM. bought the Speedmaster 6in rods with 7/16 bolts. Piston wt with pins and rings will be app 580gms, Will this rod and bolt package hold up?Cant find info on 8640 bolts.
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