June 06, 2018
Package Quantity: 5Find a Distributor
Sonnax now offers a high performance pump slide spring 77722-01K for the 4L60, 4L60-E, 4L65-E and 200-4R. In high performance applications, when engine speed exceeds 5800 rpm, the centrifugal force on the pump vanes acts to center the pump slide and reduce the pump volume. It's critical to maintain maximum pump volume in these vehicles in order to hold line pressure and avoid 3-4 clutch failure. The Sonnax spring is stiffer than the combined force of the dual OE springs and is able to hold the pump slide in a maximum volume position despite the high engine speed.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.