TH700-R4, 4L60

For high performance street and race applications that rev over 5500 RPM

Fits all 700R4, 4L60, 4L60E, 4L65E, 4L65E 1981-on

At high RPM, the check ball in the input drum will not seat due to outward centrifugal force. This same centrifugal force acts on the inner seal of the 3rd clutch piston causing it to pull away from the forward clutch steel housing creating a big leak in 3rd apply oil. This contributes to a no 2-3 shift at high RPM and 3-4 clutch burning.

Without an air bleed at High RPM’s residual oil behind the 3-4 piston can become trapped allowing the 3-4 clutch’s to drag in 1st & 2nd gear. This is why just plugging the capsule is not the best answer. The new TransGo 3-4 orifice eliminates the check ball and provides additional exhaust for the residual oil. Installing both the orifice and the new release springs in the drum will help prevent dragging the clutches around in 1st and 2nd gear and fix a big leak.

Features:

• Prevents Hi RPM centrifugal clutch apply
• For use with original or additional clutches

TransGo Installation Instructions