{"product_id":"suncoast-74140-01k-heavy-duty-3-4-clutch-backing-plate-kit","title":"Suncoast Heavy Duty 3-4 Clutch Backing Plate Kit","description":"\u003cp\u003e \u003c\/p\u003e\n\n\u003ch2 class=\"light\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eRequires ’87-later housing, snap ring and ring gear and ’91-later 3-4 apply ring stamped with number “7”, measuring 3.671–3.682\" in height.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cdiv class=\"spaced-vertical\"\u003e\n\n\u003cp\u003eA 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.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003eOther aftermarket solutions typically employ a thinner backing plate, and thinner steels which ultimately exacerbate the problem.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003eSonnax 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.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cp\u003eDesigned 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.\u003c\/p\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eBacking plate is significantly thicker and stiffer than OE for added durability\u003c\/li\u003e\n\n\u003cli\u003eDrop-in, mid-level upgrade for daily drivers and mild street\/strip applications\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Suncoast Performance","offers":[{"title":"Default Title","offer_id":48219417968881,"sku":"74140-01K","price":233.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/1344\/3057\/files\/Heavy-Duty-3-4-Clutch-Backing-Plate-Kit-Suncoast-Performance-151186624.jpg?v=1779830284","url":"https:\/\/tamelessperformance.com\/products\/suncoast-74140-01k-heavy-duty-3-4-clutch-backing-plate-kit","provider":"TAMELESS PERFORMANCE","version":"1.0","type":"link"}