transmission shifting

dmc919 · #1 (**permalink**) 12-02-2009, 10:57 AM

what controls the shift points and firmness on an automatic?

***NCHornet*** · #2 (**permalink**) 12-03-2009, 05:46 AM

Valvebody controls firmness Changing the VB to a tuned VB will lengthen the life of your trans by shortening these shifts.

NCH

Big_Stroker · #3 (**permalink**) 12-03-2009, 06:07 AM

That is also controlled by the PCM

dmc919 · #4 (**permalink**) 12-03-2009, 10:54 AM

so there's no way to change the shift points without a reprogram or new valvebody? i'm not really looking for a firmer shift, just would like it to shift more early. seems like i'm always pulling back on the throttle a little so it'll shift, other wise when driving normal it shift at 2500 and i try to keep it below 2000

Big_Stroker · #5 (**permalink**) 12-03-2009, 10:58 AM

Just call matt at Gearhead automotive and get a good custom tuned chip from him. Back when I had an auto i loved his shift points

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Remove Advertisements Sponsored Links
Powerstroke.org Advertisement