Isky Cams 1.235 Dual Valve Springs (8 Pack) Intake Manifold 435 in Long

435 in Long

Adds durability surpassing most OEM rubber boots

640 in OD Steps

"Big Daddy" Don Garlits

Everything we've learned from racing and street performance over nearly four decades is reflected in each product that leaves our facilities

Isky Cams 1.235 Dual Valve Springs (8 Pack) Intake Manifold 435 in LongProduct Description: Valve Spring Dual Spring 300 lb in Spring Rate 0. 940 in Coil Bind 1. 235 in OD Set of 8 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,