{"product_id":"sonnax-smart-tech-drum-module-suit-gm-th400","title":"Sonnax Smart-Tech Drum Module - SX34555-01K","description":"\u003cp\u003eTH400 SMART-TECH DRUM MODULE\u003c\/p\u003e\u003cp\u003eSuit GM TH400\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePart Number\u003c\/b\u003e: SX34555-01K\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cdiv class=\"value description\" itemprop=\"description\"\u003e \u003cp\u003eSonnax Smart-Tech drum module 34555-01K for racing GM TH400 transmissions improves on-track performance and consistency, leading to quicker ETs, more wins and greater reliability.\u003c\/p\u003e\n\u003cp\u003eThe TH400 is preferred for its overall durability and multitude of available ratios, but is known to be heavier and less efficient than the popular two-speed Powerglide. Part of the TH400 inefficiency results from the fact that the direct drum counter rotates, spinning backwards in 1st Gear, brakes to a complete stop on the 1-2 shift, then goes from 0 RPM to input RPM on the 2-3 shift. Significant energy is wasted through this cycle that robs power, upsets traction on the shifts and contributes to broken internal parts.\u003c\/p\u003e\n\u003cp\u003eCompared to aluminum direct drums, the Smart-Tech drum module reduces the weight of the counter-rotating components by over 3.3 lbs! And more significantly, because the weight of the Sonnax counter-rotating parts is closer to the centerline, there is a 53% reduction in energy required to stop and restart during the 1-2 and 2-3 shifts. The benefits are increased wheel horsepower, better acceleration, less shock on the shifts and improved durability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete kit replaces both forward and direct drums and includes everything from intermediate sprag to the pump; a selection of Sonnax input shafts is available separately\u003c\/li\u003e\n\u003cli\u003e100% new content, no used core pieces\u003c\/li\u003e\n\u003cli\u003eIncludes larger-diameter, 36-element sprag and sprag race that works with OE intermediate clutches\u003c\/li\u003e\n\u003cli\u003eIncludes six-friction forward clutch pack and seven-friction direct clutch pack\u003c\/li\u003e\n\u003c\/ul\u003e \u003c\/div\u003e\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cstrong\u003eImportant Information\u003c\/strong\u003e\u003c\/span\u003e: \u003c\/p\u003e\u003cdiv class=\"data item content\" aria-labelledby=\"tab-label-product.tab_important_information-title\" id=\"product.tab_important_information\" data-role=\"content\"\u003e \u003cdiv class=\"content-body\"\u003e\u003cp\u003eFor racing applications that do not use front band and run a 1\" main shaft.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sonnax","offers":[{"title":"Default Title","offer_id":49001555296483,"sku":"SX34555-01K","price":5637.5,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/0821\/9875\/files\/wu1ftmchyavpcm8v36gu.jpg?v=1779456095","url":"https:\/\/fastlanespares.co.nz\/products\/sonnax-smart-tech-drum-module-suit-gm-th400","provider":"Fast Lane Spares","version":"1.0","type":"link"}