Continuous oscillation of the Forward and Reverse abuse valves in GM 4L60-E, 4L65-E and 4L70-E units creates bore wear, allowing clutch feed pressure to exhaust. This reduced clutch pressure causes slippage and burn-up. Reconditioning the bore and installing Sonnax oversized Forward and Reverse abuse valve kit re-establishes hydraulic integrity, eliminating clutch pressure loss. The Sonnax oversized replacement valve has extended spool lengths to provide additional sealing contact area. The stabilization flats on the inboard end of the spool maintain OE flow, but provide continual valve support while stroking. An annular groove has been added to prevent side loading and a new spring has been provided for the modified valve length. Sonnax oversized Forward and Reverse abuse valve kit 77754-58K fits either the Forward or Reverse abuse location and includes a replacement bore plug.

Eliminates leakage of clutch feed pressure to the exhaust port at the spring pocket
One valve and spring combination works for either Forward or Reverse abuse locations
Includes replacement abuse bore plug

More From This Category

Sonnax Clutch A Control Boost Valve Kit, Ford, ZF6Hp19/26/32, 6R60/75/80/100, Each

Sonnax Clutch A Control Boost Valve Kit, Ford, ZF6Hp19/26/32, 6R60/75/80/100, Each

$118.83

MANLEY Valve, Titanium, Intake, Bead Loc, 2.1 in. Head Dia, 0.3415 in. Stem Dia, 5.04 in. Height, Each

MANLEY Valve, Titanium, Intake, Bead Loc, 2.1 in. Head Dia, 0.3415 in. Stem Dia, 5.04 in. Height, Each

$302.72

MANLEY Valve, Custom, Titanium, .3110 in. Stem Dia, Each

MANLEY Valve, Custom, Titanium, .3110 in. Stem Dia, Each

$318.84

Sonnax Boost Valve Kit, GM, 4L30E, Ar25, Ar35, Oe Code 264, Each

Sonnax Boost Valve Kit, GM, 4L30E, Ar25, Ar35, Oe Code 264, Each

$75.20

MANLEY Valve, Severe Duty, Intake, 2.02 in. Head Dia, 0.3415 in. Stem Dia, 5.14 in. Length, SBC, Each

MANLEY Valve, Severe Duty, Intake, 2.02 in. Head Dia, 0.3415 in. Stem Dia, 5.14 in. Length, SBC, Each

$78.54

MANLEY Valve, Pro Flo, Intake, 1.937 in. Head Dia, 0.3415 in. Stem Dia, 4.911 in. Length, SBC, Each

MANLEY Valve, Pro Flo, Intake, 1.937 in. Head Dia, 0.3415 in. Stem Dia, 4.911 in. Length, SBC, Each

$75.93