{"product_id":"suncoast-34555-01k-sonnax-th400-smart-tech-drum-module","title":"Suncoast Sonnax TH400 Smart-Tech Drum Module","description":"\u003cdiv class=\"spaced-vertical\"\u003e\n\n\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\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 1\u003csup\u003est\u003c\/sup\u003e 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\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 68% 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\n\u003cul\u003e\n\n\u003cli\u003eComplete kit replaces both forward and direct drums and includes everything from intermediate sprag to the pump; a selection of inputs shafts is available separately\u003c\/li\u003e\n\n\u003cli\u003e100% new content, no used core pieces\u003c\/li\u003e\n\n\u003cli\u003eIncludes larger-diameter, 36-element sprag and sprag race that works with OE intermediate clutches\u003c\/li\u003e\n\n\u003cli\u003eIncludes six-friction forward clutch pack and seven-friction direct clutch pack\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Suncoast Performance","offers":[{"title":"Default Title","offer_id":48219397062897,"sku":"34555-01K","price":3295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/1344\/3057\/files\/Sonnax-TH400-Smart-Tech-Drum-Module-Suncoast-Performance-151107698.jpg?v=1779829435","url":"https:\/\/tamelessperformance.com\/products\/suncoast-34555-01k-sonnax-th400-smart-tech-drum-module","provider":"TAMELESS PERFORMANCE","version":"1.0","type":"link"}