Isky Cams 7° Steel Valve Spring Retainers – .730″ Inner Step Diameter, 1.120″ Outer Step Diameter – Use w/ #ISK9265, 9315, 9365, 9365-Sp, 9375, 9375/85, 9385, 9365, 9965, 9975, 9985, 9995 Valve Springs

The Isky Super 7 Retainer and Lock system offers a more precise fit than Isky’s standard Jumbo 7 degree Lock / Retainer Combo. The Super 7 degree lock is actually closer to an 8 degree taper angle and incorporates a ground finish on the O. D. to exert a greater locking force in the retainer. Valve spring heights are more consistent as a result.

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 engine testing program. Still another dynamometer is used exclusively for the purpose of testing the endurance of racing valve gear components in today’s OHV engines. The final phase of testing is accomplished when the newly dyno tested cams and components are coordinated with the best stock and performance equipment into racing cars and boats as well as performance and stock street machines. The testing is completed under actual racing and street conditions that our customers may encounter. This assures the consumer of accuracy and quality control unparalleled in the industry. The results of these tests are available to all hot rodders, racers, and engine builders in the form of horsepower charts, plus information on carburetion, jetting, ignition, timing, and exhausts. These are just a few of the many ways Isky’s research is shared with the racing enthusiasts.

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