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This Speedmaster 300M steel crank gear
For performance ball joints from a name you can trust
providing competition engine builders with the most accurate valvetrain components available today
Available in different bore diameters to suit your specific engine's needs
Pontiac 326 400 455 Flat Guide Plates (5/16" Pushrod - 7/16" Stud Hole - 1 Pc.) This Speedmaster 300M steel crankYou need guideplates to keep your pushrods from deflecting under high rpm conditions. That's just what our Speedmaster guideplate sets do, they are made from 5140 Chromoly steel, nitrided and black oxide coated for corrosion and wear resistance.
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