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ATS Full Allison Conversion Kit Stage 4 Transmission Build Replaces 2 Wheel Drive Aisin AS68RC 2010 2012 2020 2025 Ford F 350 7.3L Super Duty PreAxle Dual Outlet FGXX 668603 PreAxle Dual Outlet S&B devotes a huge amount of resources to engineer our intakes that allows your engine to run properly with stock calibration or enhanced tuning The first three gears of the 48RE are spaced evenly while the 4th gear is a massive jump into overdrive The lock up torque converter was added as an afterthought to the already outdated low line pressure transmission making it difficult to control the application of the converter clutch providing unpleasant TCC shifts
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