The Ford Barn - View Single Post - Fordomatic late shifting ('57 thunderbird)

rotorwrench · 10-16-2020, 06:32 PM

If a person does the pressure test and it seems to be in the range but on the low side then it may have an internal leak. The transfer tubes can leak, the piston rings can leak, and the servo pistons can leak. The governor is back there with the tubes & piston rings. If shifts are positive but late then I would gravitate toward that area around the governor. Leaky servos will not give very positive shifting and especially with the old metal clutch packs.

I don't think this problem would have much to do with the type of ATF.

10-16-2020, 06:32 PM	#15
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,422	Re: Fordomatic late shifting ('57 thunderbird) If a person does the pressure test and it seems to be in the range but on the low side then it may have an internal leak. The transfer tubes can leak, the piston rings can leak, and the servo pistons can leak. The governor is back there with the tubes & piston rings. If shifts are positive but late then I would gravitate toward that area around the governor. Leaky servos will not give very positive shifting and especially with the old metal clutch packs. I don't think this problem would have much to do with the type of ATF.