Seller notes

4L60, 4L60-E, 4L65-E, 4L70-E 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....

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