SERVO SPRING POWERGLIDE HD

Sonnax return springs offer a reliable replacement for your high clutch return springs for Powerglide overhauls. They are engineered to provide positive disengagement of the direct clutch in low gear and to yield minimal resistance during upshift. Each spring is made from high tensile spring wire and cadmium-plated to slow fatigue. All spring ends are close-wound to prevent arch deflection and then match ground to a uniform length to ensure equal load distribution. Designed to work with line pressures from 200 to 275 psi., includes two .050 in. shims to aid in tuning at higher line pressures.