Isky Cams 7 Valve Locks - 11/32" Diameter Valve Stems Square Steel Tubing Tubing 55-57 Chevy

55-57 Chevy

2003-2009 GMC C4500 Topkick

and tested on Dartas computer-controlled engine dyno

and emissions accessories

Isky Cams 7 Valve Locks - 11/32" Diameter Valve Stems Square Steel Tubing Tubing 55-57 ChevyIsky Valve Locks are machined from 4140 chrome moly bar stock and heat treated. As the world's largest racing, performance, and economy cam manufacturer, Isky maintains a dynamometer testing program for constant improvement of camshaft and valve train design. These tests are conducted daily in Isky's new enlarged dyno facility. To properly evaluate and prove the efficiency of Isky racing cams and valve train components, Isky maintains a continuous