Frankenstein M311 Rocker Arm Stand - Machined Billet - GM LS-Series Trailer Components & Accessories 2007-2008 GMC Sierra 3500 HD

2007-2008 GMC Sierra 3500 HD (Front)

Chevrolet: Impala 71 - 96 SS

7/16" Stud Diameter for Big Block Chevy

Water Neck Bleeder

437 in Bolt Circle

Frankenstein M311 Rocker Arm Stand - Machined Billet - GM LS-Series Trailer Components & Accessories 2007-2008 GMC Sierra 3500 HDProduct Description: Rocker Arm Stand M311 Aluminum Machined LS3 GM LS Series A designer and manufacturer of top quality high performance cylinder heads and intake manifolds for GM's popular LS series engines as well as other performance powerplants, Frankenstein Engine Dynamics specializes in taking a high output engine to the next level. They also offer premium camshafts and valvetrain components designed for maximum performance and reliability.