. New Sonnax 4L60-E Heavy Duty 3-4 Clutch Backing Plate Kit 74140-01k

Description: 4l60, 4L60e, 4L65e, 4L70e Heavy Duty 3-4 Clutch Backing Plate Kit Part No. 74140-01K Requires ‘91-later 3-4 apply ring stamped with number “7”, measuring 3.671–3.682" in height. A thin, weak backing plate is the leading cause of 3-4 clutch distortion and burnup – a pervasive problem in listed GM transmissions. Even the thickest OE backing plate flexes during clutch apply, allowing heat to build up unevenly, causing problems in daily drivers and mid-level street/strip vehicles alike.Other aftermarket solutions typically employ a thinner backing plate, and thinner steels which ultimately exacerbate the problem.Sonnax heavy duty 3-4 clutch backing plate kit 74140-01K significantly reduces backing plate flex for increased 3-4 clutch durability. It features a significantly thicker and stiffer backing plate, used together with a thinner (yet stiffer) apply plate.Designed for use with GM high energy clutch pack with seven .067" frictions and six .095" steels, this kit can be used to upgrade OE 700-R4 and 4L60-E five-friction or six-friction clutch packs to seven frictions, or to improve stock, seven-friction clutch packs in 4L65-E and 4L70-E units by reducing backing plate flex.Backing plate is significantly thicker and stiffer than OE for added durabilityDrop-in, mid-level upgrade for daily drivers and mild street/strip applicationsContentsBacking PlateApply Plate

Price: 108.91 USD

Location: El Paso, Texas

End Time: 2024-09-05T23:31:44.000Z

Shipping Cost: 0 USD