Transmission Shifting - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 02-18-2012, 10:17 PM Thread Starter
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Transmission Shifting

I drove my brothers duramax the other day and the transmission shifts so much quicker and smoother than mine in my 7.3L. Also my transmission shifts around 3000rpm and it sounds like the motors about to blow. I didnt know if there was anyway to make the transmission shift quicker or if it had something to do with the custom tunes that I have. If anyone knows anything or could help me out on this i would appreciate it alot. I know the basics of transmissions, but im more of a motor guy not transmission. I do have a built SunCoast transmission by the way. Thanks!

2003 Ford F-250

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TS 6 position Custom Tunes
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s300 on H2e mounting
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post #2 of 8 Old 02-19-2012, 05:42 AM
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Does it shift at 3k WOT or all the time?


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post #3 of 8 Old 02-19-2012, 06:01 AM Thread Starter
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It shifts at 3000rpm at WOT. If I do drag races this summer I would like for it to shift a little quicker when I put it to the floor and keep it there.

2003 Ford F-250

Custom Intake (AFe airfilter)
TS 6 position Custom Tunes
4in turbo back exhaust 8 inch tip
175cc injectors
s300 on H2e mounting
Autometer Gauges (boost, pyro, trans temp)
HID Nation 35W 8000k HID'S
4inch lift
35 inch Nitto Terra Grapplers
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post #4 of 8 Old 02-19-2012, 06:37 AM
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Try lifting off the loud peddle when you want it to shift.


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Forged Rods
ARP Head & Main Studs
Port, Polish, 3 way valve job
Beans 160cc Single Shot Injectors
DI Regulated Return/Oil X Over
DieselSite Coolant Filter
TS 6 position (Beans Tunes)
AFE stage 2 dry
Labonte Stage 3 Methanol Injection
Banks wheels, exhaust housing, wastegate, Intercooler
5in Turbo back Exhaust
Custom Built Trans w/ Billet Shafts
Mag-Hytec Trans Pan/Diff Covers
6.0 Trans Cooler
SnowDogg EX90 plow
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post #5 of 8 Old 02-19-2012, 06:41 AM Thread Starter
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Thanks ill try that. Would a suncoast transmission controller let me change the way it shifts to however i want? Or are they even worth the money?

2003 Ford F-250

Custom Intake (AFe airfilter)
TS 6 position Custom Tunes
4in turbo back exhaust 8 inch tip
175cc injectors
s300 on H2e mounting
Autometer Gauges (boost, pyro, trans temp)
HID Nation 35W 8000k HID'S
4inch lift
35 inch Nitto Terra Grapplers
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post #6 of 8 Old 02-19-2012, 06:58 AM
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Having a built trans usually means converter upgrades. An upgraded converter locks up sooner, that and your chip prob increases line psi. Letting off the throttle will unlock your converter and allow it to shift. Idk about the trans controller, never used one. Your custom tunes prob have shift points built in. Whos tunes do you have?


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Forged Rods
ARP Head & Main Studs
Port, Polish, 3 way valve job
Beans 160cc Single Shot Injectors
DI Regulated Return/Oil X Over
DieselSite Coolant Filter
TS 6 position (Beans Tunes)
AFE stage 2 dry
Labonte Stage 3 Methanol Injection
Banks wheels, exhaust housing, wastegate, Intercooler
5in Turbo back Exhaust
Custom Built Trans w/ Billet Shafts
Mag-Hytec Trans Pan/Diff Covers
6.0 Trans Cooler
SnowDogg EX90 plow
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post #7 of 8 Old 02-19-2012, 12:45 PM Thread Starter
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Wagner Performance.......hes strictly powerstroke and has been working on them since he was 16

2003 Ford F-250

Custom Intake (AFe airfilter)
TS 6 position Custom Tunes
4in turbo back exhaust 8 inch tip
175cc injectors
s300 on H2e mounting
Autometer Gauges (boost, pyro, trans temp)
HID Nation 35W 8000k HID'S
4inch lift
35 inch Nitto Terra Grapplers
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post #8 of 8 Old 02-19-2012, 07:36 PM
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With the chip, and the line pressure your stock trans is going to shift a bit more sluggishly than the duramax. What is the age difference and mileage differnce between the two trucks? When I got my built trans a few months ago, I must say the difference is phenomenal, its a night and day swap. If you want a drastic change in shifts send your chip back and tell them you want the shift points on x tune changed.
~Phil

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