Erson E915049 FSP Professional Drag Racing Valve Springs, 1.677" Dia., 350#@ 2.200, 1073#@ 1.200, Max Lift 1.005, Set of 16

Primarily For Supercharged Alcohol Combinations, These Springs Deliver The Open Pressures Required To Maintain Valve Train Stability, RPM And Long Spring Life. These Springs Are Also An Excellent Choice For Pro Stock Truck, Competition Eliminator And Pro Mod Engine Applications. 

Brand: Erson Cams

Category: FSP Professional

I.D. Inner: 0.635"

I.D. Middle: 0.874"

I.D. Outer: 1.225"

O.D. Inner: 0.870"

O.D. Middle: 1.195"

O.D. Outer: 1.677"

Spring Rate: 728

Valve Spring: TRIPLE

Max Lift: 1.005"