{"title":"Automatic Transmission Drums","description":null,"products":[{"product_id":"aluminum-direct-drum-assembly-7075-billet-alm","title":"Coan Edgineering 7075 Billet Aluminum Direct Drum Assembly — 5 Clutch for TH400 Transmission","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Coan Edgineering\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eCoan Edgineering engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Coan Edgineering lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eRevolutionize Your TH400 with Coan Edgineering's 7075 Billet Aluminum Direct Drum Assembly\u003c\/h2\u003e\u003cp\u003eIn the world of high-performance drag racing and extreme street applications, every ounce of rotating mass matters, and clutch capacity is king. Coan Edgineering delivers on both fronts with their \u003cstrong\u003e7075 Billet Aluminum Direct Drum Assembly\u003c\/strong\u003e for TH400 transmissions. This advanced assembly is engineered to significantly reduce parasitic loss while dramatically increasing the direct clutch's holding power, translating directly into quicker acceleration and more reliable shifts.\u003c\/p\u003e\u003ch3\u003eLightweight Strength, Uncompromising Performance\u003c\/h3\u003e\u003cp\u003eConstructed from aerospace-grade 7075 billet aluminum, this direct drum assembly offers an exceptional strength-to-weight ratio. The substantial reduction in rotating mass compared to a factory steel drum allows your engine to rev faster and transfer power more efficiently to the wheels. Furthermore, this assembly is designed to accommodate a \u003cstrong\u003e5-clutch pack\u003c\/strong\u003e, providing a substantial increase in surface area for superior holding power and heat dissipation, crucial for preventing clutch slippage under high torque.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e7075 Billet Aluminum:\u003c\/strong\u003e Maximizes strength while drastically reducing rotating mass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-Clutch Capacity:\u003c\/strong\u003e Enhances holding power and heat management for extreme applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Assembly:\u003c\/strong\u003e Includes hub and pressure plate for a comprehensive upgrade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for TH400:\u003c\/strong\u003e Engineered for perfect fitment and seamless integration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Edge in Competition\u003c\/h3\u003e\u003cp\u003eFor serious competitors, the Coan Edgineering 7075 Billet Aluminum Direct Drum Assembly is a game-changer. By minimizing inertia and maximizing clutch engagement, it provides a tangible advantage on the track. This upgrade is not just about raw strength; it's about intelligent engineering that translates into measurable performance gains and extended transmission life in the most demanding environments.\u003c\/p\u003e\u003cp\u003eElevate your TH400 transmission's performance and durability with the Coan Edgineering 7075 Billet Aluminum Direct Drum Assembly. Experience the pinnacle of transmission technology, available exclusively at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Coan Edgineering products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/glide-pro-brake-w-rev-lock-out-std-pattern\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Engineering Powerglide Pro Transbrake Kit — Standard Pattern With Reverse Lockout\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/powerglide-trans-brake-solenoid\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Engineering Powerglide Transbrake Solenoid — Replacement High-Performance Solenoid\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/rear-block-off-plate-gm-powerglide\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Engineering Rear Block Off Plate — GM Powerglide Transmission\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/glide-master-overhaul-kt-no-band-or-filter\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Engineering Glide Master Overhaul Kit — GM Powerglide Rebuild\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/glide-gasket-seal-kit\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Edgineering Glide Gasket \u0026amp; Seal Kit — Powerglide Transmission Overhaul\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Coan Edgineering 7075 Billet Aluminum Direct Drum Assembly \\u2014 5 Clutch for TH400 Transmission\",\"description\":\"Optimize your TH400 transmission with the Coan Edgineering 7075 Billet Aluminum Direct Drum Assembly. Features 5-clutch capacity for superior power handling and reduced rotating mass. Shop now!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Coan Edgineering\"},\"mpn\":\"COA-22815\",\"url\":\"https:\/\/ggcracing.com\/products\/aluminum-direct-drum-assembly-7075-billet-alm\",\"offers\":{\"@type\":\"Offer\",\"price\":\"1025.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/aluminum-direct-drum-assembly-7075-billet-alm\",\"sku\":\"BJBP_COA-22815\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Coan Edgineering\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Coan+Edgineering\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Coan Edgineering 7075 Billet Aluminum Direct Drum Assembly \\u2014 5 Clutch for TH400 Transmission\",\"item\":\"https:\/\/ggcracing.com\/products\/aluminum-direct-drum-assembly-7075-billet-alm\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Coan Edgineering 7075 Billet Aluminum Direct Drum Assembly \\u2014 5 Clutch for TH400  fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Coan Edgineering?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Coan Edgineering 7075 Billet Aluminum Direct Drum Assembly \\u2014 5 Clutch for TH400 ?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Coan Edgineering","offers":[{"title":"Default Title","offer_id":40870756843604,"sku":"BJBP_COA-22815","price":1065.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/COA22815.jpg?v=1714356450"},{"product_id":"direct-drum-assy-w-super-sprag-5-clutch-intermed","title":"Coan Engineering TH400 Direct Drum Assembly w\/ 36 Element Super Sprag — Racing Transmission","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Coan Edgineering\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eCoan Edgineering engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Coan Edgineering lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/VpR-flNihKg\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eHeavy-Duty TH400 Direct Drum Assembly\u003c\/h2\u003e\u003cp\u003eUpgrade your TH400 transmission with the Coan Engineering Direct Drum Assembly, featuring a robust 36-element super sprag. Designed for high-horsepower applications, this assembly is the ultimate solution for racers looking to eliminate weak points in their drivetrain. The 5-clutch configuration ensures maximum torque capacity and consistent shifting under extreme racing conditions, making it a must-have for drag racing and high-performance builds.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmission Compatibility:\u003c\/strong\u003e TH400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSprag Type:\u003c\/strong\u003e 36-Element Super Sprag for superior holding power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClutch Capacity:\u003c\/strong\u003e 5-Clutch design for enhanced torque handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-strength steel construction for maximum durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural finish, precision-machined for a perfect fit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe 36-element sprag is significantly stronger than factory components, providing the reliability required when launching at the drag strip. By upgrading to this Coan Engineering assembly, you reduce the risk of sprag failure and transmission damage, allowing you to push your engine to its limits with confidence. This kit is engineered to integrate seamlessly into your existing TH400 setup, providing a professional-grade upgrade that stands up to the most demanding track environments. Experience the difference in shift quality and drivetrain longevity with this premium component from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Coan Edgineering products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/glide-pro-brake-w-rev-lock-out-std-pattern\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Engineering Powerglide Pro Transbrake Kit — Standard Pattern With Reverse Lockout\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/powerglide-trans-brake-solenoid\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Engineering Powerglide Transbrake Solenoid — Replacement High-Performance Solenoid\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/rear-block-off-plate-gm-powerglide\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Engineering Rear Block Off Plate — GM Powerglide Transmission\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/glide-master-overhaul-kt-no-band-or-filter\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Engineering Glide Master Overhaul Kit — GM Powerglide Rebuild\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/glide-gasket-seal-kit\" style=\"color:#0066cc;text-decoration:none;\"\u003eCoan Edgineering Glide Gasket \u0026amp; Seal Kit — Powerglide Transmission Overhaul\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Coan Engineering TH400 Direct Drum Assembly w\/ 36 Element Super Sprag \\u2014 Racing Transmission\",\"description\":\"Boost your TH400 transmission reliability with the Coan Engineering Direct Drum Assembly featuring a 36-element super sprag. Built for performance. Buy today!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Coan Edgineering\"},\"mpn\":\"COA-22817\",\"url\":\"https:\/\/ggcracing.com\/products\/direct-drum-assy-w-super-sprag-5-clutch-intermed\",\"offers\":{\"@type\":\"Offer\",\"price\":\"820.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/direct-drum-assy-w-super-sprag-5-clutch-intermed\",\"sku\":\"BJBP_COA-22817\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Coan Edgineering\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Coan+Edgineering\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Coan Engineering TH400 Direct Drum Assembly w\/ 36 Element Super Sprag \\u2014 Racing Transmission\",\"item\":\"https:\/\/ggcracing.com\/products\/direct-drum-assy-w-super-sprag-5-clutch-intermed\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Coan Engineering TH400 Direct Drum Assembly w\/ 36 Element Super Sprag \\u2014 Racing T fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Coan Edgineering?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Coan Engineering TH400 Direct Drum Assembly w\/ 36 Element Super Sprag \\u2014 Racing T?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Coan Edgineering","offers":[{"title":"Default Title","offer_id":40870756941908,"sku":"BJBP_COA-22817","price":820.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/COA22817.jpg?v=1714356467"},{"product_id":"ati-performanceth350-drum-assy-direct-w-36-element-sprag","title":"ATI Performance TH350 Direct Drum Assembly with 36-Element Sprag — Fits TH350 Transmissions","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout ATI Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eATI Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full ATI Performance lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/VpR-flNihKg\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eUltimate Strength for TH350 Transmissions\u003c\/h2\u003e\u003cp\u003eUpgrade your TH350 transmission with the ATI Performance direct drum assembly, specifically engineered to handle the stresses of high-horsepower applications. Featuring a robust 36-element sprag, this drum assembly provides significantly increased holding capacity compared to stock components, preventing sprag failure under heavy load.\u003c\/p\u003e\u003ch3\u003eEngineered for High-Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e36-element sprag for superior strength\u003c\/li\u003e\n\u003cli\u003eLightweight aluminum construction\u003c\/li\u003e\n\u003cli\u003eNatural finish for a clean look\u003c\/li\u003e\n\u003cli\u003eDirect replacement for TH350 transmissions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe use of high-quality aluminum reduces rotating mass, allowing for quicker engine response and improved overall transmission efficiency. This kit is a must-have for any serious drag racer or performance enthusiast looking to bulletproof their TH350 transmission. By replacing your stock drum with this reinforced unit, you gain the confidence to push your vehicle to the limit without worrying about drivetrain failure. Experience the difference in durability and performance that ATI brings to your transmission build. Shop the full range of high-performance drivetrain upgrades at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular ATI Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performanceseal-adapter-wheel-bearing-for-2-0-spindle\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance Wheel Bearing Seal Adapter — Fits 2.0 Inch Spindles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performancecam-sensor-bracket-kit-gm-ls-w-jesel-belt-drive\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance Cam Sensor Bracket Kit — Fits GM LS with Jesel Belt Drive\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performancesuper-case-bellhousing-bbf-164-tooth-sfi\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance Super Case Bellhousing BBF 164 Tooth – SFI 30.1 Certified\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performancep-g-supercase-tail-housing\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance Powerglide Supercase Tail Housing — Roller Bearing Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performancesfi-bellhousing-for-gm-th350-th400-w-oe-case\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance SFI 30.1 Bellhousing for GM TH350\/TH400 — Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"ATI Performance TH350 Direct Drum Assembly with 36-Element Sprag \\u2014 Fits TH350 Transmissions\",\"description\":\"Upgrade your TH350 transmission with the ATI Performance direct drum assembly featuring a 36-element sprag for maximum durability. Order at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"ATI Performance\"},\"mpn\":\"355702\",\"url\":\"https:\/\/ggcracing.com\/products\/ati-performanceth350-drum-assy-direct-w-36-element-sprag\",\"offers\":{\"@type\":\"Offer\",\"price\":\"643.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/ati-performanceth350-drum-assy-direct-w-36-element-sprag\",\"sku\":\"BHZJ_355702\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"ATI Performance\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=ATI+Performance\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"ATI Performance TH350 Direct Drum Assembly with 36-Element Sprag \\u2014 Fits TH350 Transmissions\",\"item\":\"https:\/\/ggcracing.com\/products\/ati-performanceth350-drum-assy-direct-w-36-element-sprag\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the ATI Performance TH350 Direct Drum Assembly with 36-Element Sprag \\u2014 Fits TH350 Tr fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for ATI Performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the ATI Performance TH350 Direct Drum Assembly with 36-Element Sprag \\u2014 Fits TH350 Tr?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"ATI Performance","offers":[{"title":"Default Title","offer_id":41062722240596,"sku":"BHZJ_355702","price":751.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ATI355702.jpg?v=1716603181"},{"product_id":"ati-performanceth400-alm-drum-assy-direct-w-6-clutches","title":"ATI Performance TH400 Aluminum Direct Drum Assembly w\/6-Clutches — High-Gear Performance","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout ATI Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eATI Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full ATI Performance lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/VpR-flNihKg\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eMaximize TH400 High-Gear Performance with ATI Aluminum Direct Drum\u003c\/h2\u003e\u003cp\u003eOptimize your TH400 automatic transmission for peak performance with the \u003cb\u003eATI Performance TH400 Aluminum Direct Drum Assembly featuring 6-Clutches\u003c\/b\u003e. This high-performance drum is specifically engineered to improve power transfer and durability in the high-gear range, making it an indispensable upgrade for any serious TH400 build. The increased clutch count provides significantly more holding power, reducing slip and enhancing overall efficiency under load.\u003c\/p\u003e\u003ch3\u003eLightweight Design, Heavy-Duty Performance\u003c\/h3\u003e\u003cp\u003eConstructed from premium, lightweight aluminum, this direct drum assembly reduces rotational mass, contributing to quicker acceleration and improved throttle response. Despite its reduced weight, ATI has ensured exceptional strength and heat dissipation, crucial for maintaining consistent performance during aggressive driving or racing. The natural aluminum finish adds a professional touch to your transmission's internals.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e6-Clutch Capacity:\u003c\/b\u003e Significantly increases high-gear holding power and reduces slip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLightweight Aluminum Construction:\u003c\/b\u003e Minimizes rotational inertia for faster response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEnhanced Heat Dissipation:\u003c\/b\u003e Helps maintain optimal operating temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDirect Fit for TH400:\u003c\/b\u003e Ensures seamless integration into your transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImproved Durability:\u003c\/b\u003e Built to withstand the demands of high-horsepower applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Ultimate TH400 Direct Drum Upgrade\u003c\/h3\u003e\u003cp\u003eFor those pushing the limits of their TH400 transmission, the ATI Performance Aluminum Direct Drum Assembly with 6-clutches offers a critical advantage. It's designed to provide the robust engagement and reliability needed for drag racing, off-road, or any high-stress environment. Upgrade to ATI and experience the difference in your TH400's performance. Find this and other essential transmission components at GGCRACING.COM.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular ATI Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performanceseal-adapter-wheel-bearing-for-2-0-spindle\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance Wheel Bearing Seal Adapter — Fits 2.0 Inch Spindles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performancecam-sensor-bracket-kit-gm-ls-w-jesel-belt-drive\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance Cam Sensor Bracket Kit — Fits GM LS with Jesel Belt Drive\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performancesuper-case-bellhousing-bbf-164-tooth-sfi\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance Super Case Bellhousing BBF 164 Tooth – SFI 30.1 Certified\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performancep-g-supercase-tail-housing\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance Powerglide Supercase Tail Housing — Roller Bearing Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/ati-performancesfi-bellhousing-for-gm-th350-th400-w-oe-case\" style=\"color:#0066cc;text-decoration:none;\"\u003eATI Performance SFI 30.1 Bellhousing for GM TH350\/TH400 — Aluminum\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"ATI Performance TH400 Aluminum Direct Drum Assembly w\/6-Clutches \\u2014 High-Gear Performance\",\"description\":\"Boost your TH400's high-gear performance with the ATI Performance Aluminum Direct Drum Assembly, featuring 6 clutches for superior power handling. 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See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"ATI Performance","offers":[{"title":"Default Title","offer_id":41062723584084,"sku":"BHZJ_405724","price":755.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ATI405724.jpg?v=1716603284"}],"url":"https:\/\/ggcracing.com\/collections\/automatic-transmission-drums\/on-sale.oembed","provider":"GGCRACING INC","version":"1.0","type":"link"}