![]() Be sure to watch the TKX video at the end of the article. With the gears going in from the back.Īll this means 600 lb.ft of torque capacity, and with the improved Magnum style syncro design means it can handle shifts at 7,500 RPM.Ĭheck out all the specs and images below for more comparisons. The new TKX 5-speed is an End-Load design. NVH (noise, vibration and harshness) have all been improved. Shifting is improved through use of multi-cone synchronizers carried over from the Magnum 6-speed, and hybrid synchronizer rings made of sintered bronze and carbon. All new wider, stronger gear sets made with special grade ASTM 4615 steel improve gear design. Improvements just didn’t stop with the case. Gaskets at all flanges simplify assembly and eliminate fluid leaks. The three-piece aluminum housing provides outstanding structural stiffness and includes main case, intermediate plate and rear extension. The end-load design, similar to the super strong Magnum 6-speed, is significantly stronger and allows the case to be much smaller. They made the shift from a topload design to an end-load design. Tremec wanted to kept all the great features of the TKO but package it up in much more streamlined case. This made the case much taller and square to accommodate it. One of the reasons the TKO was a boxy shape was that it was a “Topload” design, meaning the gears came in from the top. We machine down the top cover so it provides more clearance into cars such as Chevelles and Mustangs. Here at American Powertrain we do what is called “case streamlining”. This made it a tight fit into many muscle car applications. 26 spline input and 31 spline output for increased strength and capability. It was versatile, with multiple shift positions, dual speedo outputs and it was available in Ford or GM bolt patterns. It had a rated torque capacity up to 600 lbs/ft of torque, which is one of the reasons it sold so well over the years. Soon after it was known as one of the best upgrades you can do for your Fox Body car. Later on, it was used for some OEM Ford Mustang Fox Body applications as well. Based on the TR-3550, it was an OEM design that was used in some 2wd truck applications. ![]() Tremec listened to customer input over the years and decided to offer a completely aftermarket design from the ground up. These got tweaks or new tailhousing castings to offer more flexibility for aftermarket use. In the past the aftermarket transmissions were based on OEM designs in house. When Tremec designed the TKX they wanted a new design just for the aftermarket. The compact design provides clearance in most transmission tunnels without floor modifications, while case strength has increased from previous models with the new 3-piece aluminum housing and gaskets at all flanges simplifies installation and eliminates fluid leaks.What are the differences? This article is to help you understand the basic differences in the TKO 5-speed and the new TKX that replaces it. of torque capacity and are capable of engines speeds of 8,000 rpm with shifts at 7,500 rpm. Designed to fit classic muscle cars and customs, the TKX has a tighter, more streamlined case, and features 600 lbs.-ft. Tremec has normally sourced their aftermarket transmissions from the OE side, such as the Magnum T-56 and the T-5, but this new design is made from the ground up as a strictly aftermarket transmission. American Powertrain ProFit Tremec TKX manual transmissions and installation kits put the power to the pavement with unmatched durability and versatility. ![]()
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