OptiTorque Patriot Series Main Stud Kit - 12 Point Nuts - 4-Bolt Mains - Chromoly - Black Oxide - GM LT-Series 600SB029R With easy fit in mind

With easy fit in mind

Features a 5/16" ball on the lifter end and a 5/16" cup on the rocker end

The Melling 10295 high performance oil pump is a high pressure

Additional and significant performance improvements can be seen by reducing the weight of the pulley versus the original pulley which is why we recommend the BBK CNC Machined billet aluminum pulley kits for maximum horsepower gains

OptiTorque Patriot Series Main Stud Kit - 12 Point Nuts - 4-Bolt Mains - Chromoly - Black Oxide - GM LT-Series 600SB029R With easy fit in mindProduct Description: Main Stud Kit Patriot Series 12 Point Nuts 4 Bolt Mains Chromoly Black Oxide GM LT Series OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.