`+ $1500.00 Core Charge The introduction of the Allison 1000 transmission to the diesel truck market restored confidence in consumers that an automatic transmission can indeed handle the demands of exhaust braking without any electronic addition. But while the Allison is suitable for stock applications, we’ve found that it does have its limitations— particularly when flywheel horsepower exceeds 370 horsepower. That’s when the stock clutch packs can begin to slip, putting the computer in the dreaded “limp home” mode and once a clutch has slipped, the next time it will slip easier and easier. At BD, we make several modifications to the Allison to meet the demands of high-performance and heavy-duty usage. A new convertor lock up valve, updated lube & regulator and pressure release spring has been installed. With either the C1 or C2 clutches being engaged in all gears, this creates a weak link in the transmission. We designed 20% more friction surface and use high energy clutch material. We have also added extra frictions in the remaining clutches to improve holding capacity. We have modified power pistons hydraulics and return springs are changed while main line oil pressure is raised to increase clamping force on the clutch packs. If you’ve modified, or plan to modify your Duramax, the first step should be a BD Allison transmission. Call us today! We also offer Build-it transmission rebuild kits with our modified parts for those that want to build their own performance transmissions. New for 2010 we now have available exchange units for behind the Duramax LMM engine. WARRANTY : 36-month / 150,000 mile limited warranty on non competitive, racing or sled-pulling applications. See warranty statement for further details. PartNumber : bdd1064404F Description : Performance Transmission; Incl HD Transmission Pan/Filter Kit; Category : Transmissions Engine : 6.9L/7.3L IDI 83-94 Make : Ford Title : Transmission Kit - 1990-1994 Ford E4OD 4wd Suggested Product : 1030225 1990-1992 Ford F-250 Custom L6.4917cc Drivetrain::Transmissions 1990-1992 Ford F-250 Custom V8.-cc Drivetrain::Transmissions 1990-1994 Ford F-250 XL L6.4917cc Drivetrain::Transmissions 1990-1994 Ford F-250 XL V8.-cc Drivetrain::Transmissions 1993-1994 Ford F-250 XLT L6.4917cc Drivetrain::Transmissions 1993-1994 Ford F-250 XLT V8.-cc Drivetrain::Transmissions 1990-1992 Ford F-250 XLT Lariat L6.4917cc Drivetrain::Transmissions 1990-1992 Ford F-250 XLT Lariat V8.-cc Drivetrain::Transmissions 1990-1992 Ford F-350 Custom L6.4917cc Drivetrain::Transmissions 1990-1992 Ford F-350 Custom V8.-cc Drivetrain::Transmissions 1990-1991 Ford F-350 XL L6.4917cc Drivetrain::Transmissions 1993-1994 Ford F-350 XL L6.4917cc Drivetrain::Transmissions 1990-1994 Ford F-350 XL V8.-cc Drivetrain::Transmissions 1993-1994 Ford F-350 XLT L6.4917cc Drivetrain::Transmissions 1993-1994 Ford F-350 XLT V8.-cc Drivetrain::Transmissions 1990-1991 Ford F-350 XLT Lariat L6.4917cc Drivetrain::Transmissions 1990-1992 Ford F-350 XLT Lariat V8.-cc Drivetrain::Transmissions