727 Auto Trans Shift point question on a 70 RR

[soundhd]

Have a 70 RR with a 727 trans I recently bought late last year. Transmission seems to shift into second & third really quickly......If I start from a traffic light say at a 3 lane intersection (two traffic lanes and a left turn lane) by the time I get across the intersection the trans has already shifted into 3rd gear. Is that normal? Should I change it? If so how is that done?

thanks

 

[440beep]

I think that's normal under normal driving, trying to keep it economical. My '69 Bee 727 does the same thing, but when I bury the gas pedal the shift points go out to 5k+.

You can change the governor which will change the shift points. Check these links:

http://www.aandatrans.com/Departments/Chrysler-727-Trans.aspx

http://www.moparmusclemagazine.com/...ft_speeds_on_the_727_torqueflite/viewall.html

 

[dpstark2]

Here's a pic of the shift points from the '70 Plymouth FSM.



Your mileage may vary, depending on whether someone has put a shift kit in and what your gear ratio is. The B&M kit will raise shift points as much as 50% under light throttle (depending on how much you grind off the throttle valve). Other kits do the same. Seems like you're in the ballpark though. If you want to raise the shift points, call up A&A transmission for a governor or shift kit.

With my tweaked B&M install, I originally got 1-2 at ~15-20 mph and 2-3 at 25-30 mph (closed throttle). I've since turned that down a bit, but I'm still not 100% happy with it.

 

[Grabinov911]

I took mine to a trustworthy trans guy for the same problem. He also said that the governor was the problem. Apparently as the trans starts to wear, it allows junk to gunk up the governor which causes that shift problem. Problem with just changing the governor is that the underlying problem is still there. His recommendation: Drive it till it really bugs you, then rebuild the trans - and shift it manually in the meantime if you wanna go fast!

 

[lewtot184]

if the kickdown rod isn't adjusted properly early shifts or late shifts may occur.