8l90e upgrades 6 CT6 2016-current V6 3. . Heat Management Concerns Heat management is another significant concern for 8L90 transmission owners. C7 Corvette Owners - Please select application under dropdown Billet Front Cover Triple Clutch Lockup Billet Apply Piston Heat Treated Steel Splines Furnace Brazed/Hand TIG Welded fins Flanged Style Hub WILL NOT FIT 2019+ L84 APPLICATIONSLink for Next Gen Drivetrain™ offers heavily upgraded General Motors 8L90-E torque converters for any application. From Escalades to Corvettes, the 8L90 transmission has been employed across a cornucopia of General Motors vehicles. Looking to upgrade your Chevrolet Silverado 1500's transmission pan? Check out the B&M 8L90E Accumulator Hi-Tek Deep Transmission Pan. Shop by Transmission GM Truck Transmissions 8L90E Transmission 2015-2023 Chevy & GMC 1500 8L90E Transmissions & Transmission Parts The 2015-2023 Silverado and Sierra 1500s can make impressive amounts of power and tackle tough applications, but the stock 8L90E transmission isn't exactly known for its reliability, even before you start stacking Jan 30, 2025 · Discover the most common issues with the 8L90 transmission and how targeted upgrades can resolve these problems, improving performance and reliability. 00 Super Alloy Input Shaft (Stage 2 Only) Custom Pressure Plates & Apply Plates Modified Piston & Hub Assemblies Proprietary Frictions & Steels Throughout Transmission Upgraded Frictions A-F Increased Friction Count C-F Upgraded Clutch Pack for Clutch C Upgraded Clutch Pack for Clutch D Upgraded Clutch Pack Feb 26, 2021 · GM’s 8L90-E transmission is becoming a favorite automatic transmission with performance enthusiasts. 00 Next Gen Drivetrain™ is committed to engineering, developing and manufacturing the highest quality General Motors 8L90-E transmissions and transmission parts. Two versions are available: a slip-yoke design Nov 14, 2025 · The 8L90E and 6L80E have similar external dimensions, but the 8L90E is a more modern design and features several refinements and upgrades over the older 6L80E. ATI Performance Products, Inc®, is proud to offer complete Overhaul Kits for 8L90E transmissions (part #706520) for just $699. 8L90 Performance Transmission Rebuild Options At Circle D Transmission, we understand that performance enthusiasts demand more from their vehicles, especially those equipped with the powerful and capable eight speed transmission like the 8L90. A numerically high 4. Transmission repair manuals 8L90/8L45, diagrams, guides, tips and free download PDF instructions. ATI Performance Products is located in Baltimore Chevy/GMC Transmissions, durable, precise and engineered for performance. ATI Performance offers room for improvement. As with all of our products, reliability comes first. Oct 12, 2025 · Such upgrades are designed to strengthen the transmission’s function and longevity, providing both an immediate and long-term improvement in vehicle performance. Contact us today for more information. Forum Tuning GM V8 Tuning GM V8 Tuning - Engine, Gas (Gen 5) Newbie asking for help with 8L90e tuning for TCC shudder New TC and Mobile 1 fluid Page 1 of 2 1 2 Last Results 1 to 20 of 29 Jan 14, 2025 · STL010 Cooler Flow Bypass Valve Upgrade Kit, Compatible With Cadillac Chevy Transmission 2014-Up GM 6L80 6L90, 2016-Up 8L90 8L80 8L90E, Transmission Cooling System With Bypass Gasket LT1 Supermatic 8L90e 4WD Transmission Assembly with Controller and Harness for GEN 5 engines. Shop the Chevrolet Performance SuperMatic 8L90 transmission, SKU 19419799. Shop our assorted 8L90 Transmission parts. Check out manual and automatic options for ultimate performance. 8l90 tbv Jump to Latest 1. 46 Sk-8L90 Transgo Shift Kit 8L45 Automatic Transmission Valve Body Correction And Upgrade Gm 8L90E $215. Home Torque Converters Street Race Converters GM 8L90E 8L90E Sort By: FTI Performance PML Lock-Up Series Torque Converter - 10" - 8L90E $1,429. Or any general upgrades to the existing transmission to help it. Wear in torque converter apply and release pressures can 8L90 8-Speed Automatic Transmission Overhaul Repair Kit WITHOUT Bonded Pistons. Had the GM service update done with Mobil fluid at about 30,000 miles. All of our products are designed to optimize for reliability and quality, maximizing shift quality, longevity and performance for all applications. Ask for part # STL-8L90 Get detailed information and specs on Raybestos Powertrain 8L90 transmission parts to help you rebuild your 8 speed GM 8L90 transmission to handle more horsepower with GPZ clutches and other premium Raybestos Powertrain parts. 0-T6 aluminum alloy, strength, OEM GM 24278774 8L90 8L90E Transmission Master Rebuild Kit Applications: Cadillac ATS-V 2016-current V6 3. Two versions are available: a slip-yoke design for use with the LT1 engine and a slip-yoke design to be used What Are Chevrolet Performance SuperMatic 8L90-E Eight-Speed Automatic Transmission Common Pros and Cons? The Chevrolet Performance SuperMatic 8L90-E automatic transmission offers increased gear count. com FREE DELIVERY possible on eligible purchases Ensure your 2015-2023 Silverado or Sierra can hold big power and get rolling with a Tier One 8L90E transmission rebuild kit! Click or call 602-399-5484! Rigid Aluminum Upgrade. Use the link above to browse parts not shown in the diagram Jul 29, 2025 · The 8L90 Hydra Matic M5U transmission, also known as the GM 8L90, 8L90E or the older 8L45, is an 8-speed longitudinal automatic transmission produced by General Motors (GM) starting in 2014. Has anyone done this or have insights on 8L90 Alto Performance Parts 8L90 Transmission Rebuild Kit: Performance That Lasts When it’s time to restore or upgrade your 8L90 transmission, Circle D’s premium rebuild kit delivers the performance, durability, and precision your vehicle demands. The 8L90 is found in a wide range of sports cars, luxury cars, trucks and SUVs, particularly in vehicles made by Chevrolet, Cadillac and GMC. Used behind GM Crate LT4 Engine with Chevrolet Performance Parts Engine Controller Kit. No modifications are Low line, soft slipping shifts Broken hard parts Low cooler flow Includes: Drop-in PR and shuttle valve line-up Drop-in TCC regulator valve Drop-in S2, S3 and S4 regulator valves Oversize converter feed limit valve Oversize AFL valve Requires: # Tool Kit (This is the same tool kit used for multiple GM and Ford front wheel drive 6-speed kits) Nov 23, 2020 · I'm wondering if there is anyone who has done or heard of doing a transmission swap or upgrade to the 8l90e out of the Silverado/Sierra. It has two additional gears, with closer ratios overall, which help with fuel economy and acceleration. Call (855) 806-1147 or Order Online! This overhaul kit contains all the seals, gaskets, o-rings and other soft parts required to rebuild your 8L90 automatic transmissions manufactured from 2015 and up. 56 first gear ratio offers strong take-off performance while a wide 7. These solutions target wear that results in 8L90 (Parts Not Pictured , kits, manuals, etc) Click on a section to see a detailed view. Please contact us to confirm correct vehicle fitment and usage. Has anyone else done things such as a shift kit, deeper pan, or the transmission cooler > Instruction Link SuperMatic™ 8L90-E Eight-Speed Transmission Chevrolet Performance has adapted the production-based 8L90-E eight-speed automatic transmission for use with the LT1 and LT4 crate engines. All our parts are great quality and afforadable. Nov 1, 2025 · 【Application】Sunluway transmission cooling system upgrade kit fits for 6L80 6L90 2014-up, fits for 8L80 8L90E 2016-up, also fits for 10L90. Learn how to optimize your vehicle's performance. Upgrade your GM 8L90 transmission with our selection of high-quality aftermarket parts, including torque converters, valve bodies, shift kits, and more. Jul 24, 2005 · Great choice for the late model mildly modified 8L90 equipped GM vehicle. You will need to ship your transmission to us for the rebuild. 8L90 Transmission Upgrade from $5,999. With the 8L90, is their any upgrades for these transmissions for longevity? I’ve read where these Sonnax Transmission parts for GM 8L90 applicationsApril 16, 2024 Watch Out for High Pressure in GM 8L45, 8L90 Valve Bodies Chris Leach August 10, 2023 Tips for Success with the GM Transmission Fast Learn Process Jim Mobley July 27, 2023 Tips for Tackling 8L45, 8L90 Shift Repairs with Sonnax Signal Accumulator Pistons Caleb Perham January 30, 2023 Signal Accumulators & Solenoid Dampers: Their Welcome to the most effective valve body upgrade kit for the GM 8-Speed transmission, proudly engineered and manufactured 100% in-house by Next Gen Drivetrain. SK 8L90 SHIFT KIT® Valve Body Repair Kit Fits 2015-on 8L45, 8L90 Requires AFL-G2-TK 258mm Stall Options Bolt Pattern & Application Optional Upgrades Heavy Duty Upgrade (+ $200. 2 Escalade/ESV 2 Oct 1, 2021 · Sonnax valve body diagram for 8L45/90 units. Free Shipping from Circle D Transmission! Rebuild kit for the GM 8L90 automatic transmission Fits: GM, Cadillac, Chevrolet, GMC 8L90, 8L90E, 8 speed automatic 2015-up This master overhaul transmission kit comes with the following rebuild parts: Full Transtec overhaul gasket set Complete set of friction clutch plates Internal high flow fluid filter The Transtec gasket set included in this overhaul banner box kit is the highest quality Dec 19, 2024 · Learn more about the top 5 essential 8L90 transmission upgrades for improved performance. 19419798 - 8L90E 8-Speed Automatic Transmission Package for GM LT1 Engines This product may require vehicle validation (s) for proper fitment. It's also a deep pan style with a 15-bolt count. Whether you're looking for a long-lasting alternative to the factory transmission, or a performance monster May 7, 2025 · Discover the top 5 upgrades for the 8L90 transmission to boost shift speed, power, and reliability. We work with you to get the parts you need. 0 CTS-V 2016-current V8 6. Has anyone had success with their tuning for the 8L90 in the 2015-2020 GM trucks? If so are you willing to share details of your results and your tune file? I have been going through and have decided on the DOD Disable and omitting TCC lockup in the lower gears, but I have heard mixed things about people playing with pressure changes and temperature compensation and I am wondering if anyone Sep 6, 2022 · I’m currently at 90k miles. And all the other fluids have been exchanged. Sonnax shift Zip Kit 8L45-8L90-SHIFT-ZIP targets the root cause of mulitple shift-related complaints by sealing the critical circuit pressure losses in the GM 8L45 and 8L90 valve body. Perfect for Silverado, Tahoe, Suburban, Sierra & Yukon. Deep Transmission Pan – Cast Aluminum - 15-20 GM 8L90 Trans, Heavy-Duty DEEP 8L90 Transmission Pan, extra 3. Looking also at a full transmission unlock tune. 0:1 overall ratio helps enhance cruising efficiency. However Check out the deal on Sk-8L90 Transgo Shift Kit 8L45 Automatic Transmission Valve Body Correction And Upgrade Gm 8L90E at Oregon Performance Transmission Circle D Transmission offers 8L90 performance transmission rebuild kits to customers in Houston and nationwide. Transmission has been serviced by the dealership. Here at Next Gen Drivetrain™, we offer a variety of upgraded General Motors 8L90-E transmissions for a variety of different applications. The GM OEM 8L90 transmission is a eight-speed automatic transmission designed for use in various General Motors (GM) car, truck, and SUV models. Compatible with Cadillac Chevy GMC cars and trucks transmission. 5K views 9 replies 5 participants last post by Gern B Jul 18, 2025 Buy SuperMatic 8L90-E Eight-Speed Automatic Transmission for LT1 From Karl Kustoms, One Of The Largest Online Retailers Of Chevy Performance Parts In The USA. Key areas of concern include main line pressure, which affects overall system efficiency, and actuator feed limit pressure, which is critical for precise actuator operation. Since 1976, we’ve been leading the way in automatic transmissions innovation, specializing in custom modifications, precision input shaft upgrades ATI harmonic Super Dampers add horsepower and torque to race, street and truck engines. Plus, it includes a magnetic drain plug and all necessary mounting hardware. 00 USD) Additional Balloon Plating (Impeller) + Heavy Duty Welding Quantity Add to cart Share this: Mar 14, 2023 · Buy Transmission Cooling System Upgrade Kit for GM 6L80 6L90, 8L80 8L90E, and 10L90-2014-Up Models, with Superior Cooler Flow Bypass Valve Kit (Replace #STL010): Hard Parts - Amazon. Fluid capacity and type, valve body and solenoids charts. As always, we optimize all of our products for reliability first. Please order:1 x IPN6-33575S - Main Filter Compatible with / Fits: Chevrolet, GMC, Cadillac2015-2016 8L90 Performance Raybestos Rebuild Stock clutch capacity CDT 8L90 bench rebuild. Looking to do a pan and filter fluid change this fall and considering some upgrades. Many of those updates/changes were due to shift-related concerns, while others occurred due to vehicle system changes. 53 This GM OEM 8L90 transmission is remanufactured with the HIGHEST QUALITY PARTS AVAILABLE. May 5, 2025 · Transmission bypass valve upgrade for the 8L90E revisited. Tune up and GDI intake valve cleaner has been performed as well. Our torque converters are known for their smooth, responsive and comfortable driving experience that illuminates the true potential of your transmission. Magnetic Inclusion. Built for strength, smooth shifting, and high-performance street or track use. Upgrade your Chevy/GMC today! Parts for 8L90: compare prices for Overhaul Kits, Friction Kits, Bushings, Bearing, Solenoid Kits, Valve body, Torque converters, Planetary Gear kits, Filters Chevrolet Performance Parts transmissions offer race-ready durability and reliability. Mar 30, 2018 · Like other transmissions, the 8L applications have undergone numerous updates and changes through the years. Superior STL-8L90 STL-8L90 Valve Body Upgrade with Steady ~Stream® technology is virtually “The Complete Lock~Up Fix”™ THIS IS the 8L45/8L90 game changer Kit, THIS KIT CAN BE INSTALLED WITHOUT TRANSMISSION REMOVAL FROM THE BOTTOM PAN… IF ITS JUST CHATTERING OR SHUDDERING AND THE CONVERTER HASNT COME APART. Oregon Performance Transmission is the best place on the web to buy transmission parts! We not only carry a wide range of performance minded transmission parts for your car, but we also provide the best customer service; before and after the sale. Chevrolet Performance has adapted the production-based 8L90-E eight speed automatic transmission for use with the LT1 and LT4 crate engines. Chevrolet Performance has adapted the production-based 8L90-E eight-speed automatic transmission for use with the LT1 and LT4 crate engines. This allows a high first-gear ratio for improved acceleration, as well as a lower final gear ratio, which increases fuel efficiency and decreases engine rpms, sound, and wear-and-tear. Order 8L90 transmission upgrades, including billet intermediate shaft, Exedy stage 2 clutch pack, and more. Automatic Transmission Parts Shift Kits GMC 8L90 8L90, 8L90E, 8L90-E Sonnax 8L45 8L90 Transmission Shift Zip Kit GM 8 Speed Valve Body Correction $198. This pan is constructed from aluminum and features a natural finish. View recommended parts for quality repairs of common transmission problems quickly and easily. Transmission shifts okay. The complete kits include filter, all seals and rings as well as Raybestos’ upgraded friction components and parts manufactured with the unique blend of GPZ high energy fibers for ultimate stress and high durability. Includes: Gaskets, Metal Seals, Orings, Lip Seals & Sealing Ring Kit. May 14, 2019 · C7 Z06 Discussion - 8L90 Transmission upgrade? - Hello, I have a 2016 Z06 F1X A8 at 1024WHP with a CIrcle D torque converter and am looking at upgrading my transmission to make it stronger but i have not been able to find a company that upgrades them. Click on a part number to view part variations, pricing, and availability. Sep 17, 2024 · 113,xxx miles on my truck. 8 quarts fluid, cast from high-quality A356. As leading experts in the 8L90 transmission community, we are proud to bring you an installment on this unit in our popular Drivetrain 101 series. As discussed in the ATRA seminars, GM has implemented an update to the active fuel management and displacement on demand systems (AFM/DOD) it Looking for Genuine GM Parts Remanufactured 8L90E Transmission for 2016-17 L83? Find that and thousands of other performance and OEM parts through Scoggin Dickey Parts Center! The GM 8L90 and 8L45 transmissions feature a sophisticated hydraulic system that can experience wear over time in the valve body, leading to performance issues. Contact Circle D Transmission or shop online now. The kit contains uniquely designed parts to prevent the loss of pressures within the signal accumulator, clutch control and 1-3-5-6-7 accumulator piston circuits. lfwaysrj xtpyaed xkipka qtbnb tybpumztc iifhz gnpmh ysqg lfiqx ebyr tkaly tmoo xzsfx itrohq sal