I also believe back in the day there were 2 different tail shaft lengths for the Thunderbirds. This case has the narrow bolt pattern for mounting to the bell housing. This transmission was disassembled, cleaned, inspected, and reassembled using a new brass and bearings kit and a new torque lock slider. Has a 10 splined input 16 splined output.
Overall length of the transmission is 42 end to end. Tail Casting # is R11-1J - Tail housing length is 23 5/8 long. Case casting # is T85C-1A Case measures 10 13/16 long.Bearing retainer diameter measures 4 3/4. Input length from case to tip measures 6" has a 1 1/8" input. Has the narrow bolt pattern for mounting to the bell housing. Please do your homework before purchasing. This is available for sale locally and we reserve the right to end online listing at anytime.
Over 150 pounds has to go by truck. Rebuildable meaning a usable case, mainshaft, cluster gear and input. We also offer the Tremec line of 5 and 6 speed transmissions here. We stock one of the largest inventories of 3 speed OD, 4 speed Muncie, T-10 and AMC T-10 new and rebuilt transmissions and new and used parts on the West Coast. Let us know if we can help you out in any way with your manual transmission needs.The item "BORG WARNER T85 3 Speed With R11 Overdrive, THUNDERBIRD Rebuilt One Year Warranty" is in sale since Wednesday, January 9, 2019. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Transmission & Drivetrain\Manual Transmissions & Parts\Complete Manual Transmissions".501" and is located in Vancouver, Washington. This item can be shipped to United States.