Kick down question trans
#1286273
08/16/12 10:28 AM
08/16/12 10:28 AM
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Joined: Aug 2003
Posts: 194
Allenton Mi
dodgecharger68
OP
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OP
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Posts: 194
Allenton Mi
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I have a 68 satellite 383 with 727 trans. It currently shifts at 4500 rpms I would like it to shift at 5000. It has stock manifold and a carter thermoquad carb and stock kickdown linkage. Do I need to adjust the kickdown so it will shift latter. Which way would I would turn it to shift at 5000 rpms. Thanks for the help 
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Re: Kick down question trans
[Re: dodgecharger68]
#1286274
08/16/12 10:41 AM
08/16/12 10:41 AM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
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Florida
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if I am not mistaken you would need a 5000 rpm governer kit to get it to shift at that rpm when left in Drive for auto shifts. the TPV linkage would raise the shift points and when it would kickdown from 3rd with a part throttle kickdown VB but would shift back to 3rd at WOT at the governer setting. and the 68 VB does not have any part throttle kickdown,only a WOT kickdown so the governer setting is shifting back to 3rd at 4500 rpm. I could be mistaken though. 
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Re: Kick down question trans
[Re: dodgecharger68]
#1286276
08/16/12 11:40 AM
08/16/12 11:40 AM
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Joined: Jan 2003
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A Banana Republic near you.
JohnRR
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Quote:
I thought the kick down was for wot shift points wasnt sure.
No , it's for part throttle , it's actual name is THROTTLE VALVE Linkage .
The governor weights on the output shaft control wide open throttle shifts, as scratchy said .
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Re: Kick down question trans
[Re: JohnRR]
#1286278
08/16/12 01:47 PM
08/16/12 01:47 PM
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Joined: Jan 2003
Posts: 26,005
Rio Linda, CA
John_Kunkel
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While the governor does limit the maximum auto shift rpm, the linkage must also allow the governor to reach its limit.
Adjusting the linkage so that the trans lever if full back at WOT makes the governor the final control...and be sure WOT under the hood is also WOT at the pedal.
The INTERNET, the MISinformation superhighway
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Re: Kick down question trans
[Re: dodgecharger68]
#1286280
08/16/12 04:05 PM
08/16/12 04:05 PM
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Joined: Jan 2003
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Rio Linda, CA
John_Kunkel
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I understand that but the linkage adjustment might be the reason it won't. If the trans lever is all the way back when the throttle is floored and it still shifts at 4500 the only solution is to change the governor....try the easy stuff first.
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Re: Kick down question trans
[Re: John_Kunkel]
#1286281
08/16/12 04:44 PM
08/16/12 04:44 PM
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Joined: Jan 2003
Posts: 75,098
A Banana Republic near you.
JohnRR
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Quote:
I understand that but the linkage adjustment might be the reason it won't. If the trans lever is all the way back when the throttle is floored and it still shifts at 4500 the only solution is to change the governor....try the easy stuff first.
Was there any factory trans , other than a HEMI , that shifted at WOT above 4800 ???
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Re: Kick down question trans
[Re: JohnRR]
#1286282
08/16/12 07:36 PM
08/16/12 07:36 PM
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Joined: Jan 2003
Posts: 26,005
Rio Linda, CA
John_Kunkel
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The auto upshift rpm depends on some variables...one of them is how quickly the engine reaches the particular rpm and axle ratio plays a big part in that.
IOW, take two identical cars, one with 2.76 gears and the other with 4.10's....the one with 2.76's might upshift at 4500 while the one with 4.10's might upshift at 5000 simply because it got to that rpm while the trans was trying to shift at 4500.
The INTERNET, the MISinformation superhighway
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Re: Kick down question trans
[Re: 383man]
#1286284
08/17/12 01:08 AM
08/17/12 01:08 AM
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Joined: Jan 2003
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poplar bluff mo.
toplescuda
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poplar bluff mo.
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Lol for what ever reason my big block cuda convert will shift every time (wot) @6000
First time ever slamed it to the floor (in drive) it shifted each time at 6 thought it was a fluke and ran couple back road 1/4 mile passes ...... Same thing but i now think it had something changed in it lol
1970 barracuda convert. 1 of 59
1970 pro street A.A.R. clone (panther pink)
1971 charger
2015 hellcat challenger. Redline red
2014 quad cab 4x4 ram 8 speed hemi
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Re: Kick down question trans
[Re: JohnRR]
#1286285
08/17/12 01:40 AM
08/17/12 01:40 AM
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Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
Rick_Ehrenberg
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Quote:
Quote:
I understand that but the linkage adjustment might be the reason it won't. If the trans lever is all the way back when the throttle is floored and it still shifts at 4500 the only solution is to change the governor....try the easy stuff first.
Was there any factory trans , other than a HEMI , that shifted at WOT above 4800 ???
Oh, yeah, 904s in Colts, 4-cyl Jeeps, 340s, etc.
Regardless, the KD linkage must be adjust to specs. Insufficient T/pressure will cook a trans - quickly!
Rick
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Re: Kick down question trans
[Re: Rick_Ehrenberg]
#1286286
08/17/12 04:50 AM
08/17/12 04:50 AM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
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Quote:
Quote:
Quote:
I understand that but the linkage adjustment might be the reason it won't. If the trans lever is all the way back when the throttle is floored and it still shifts at 4500 the only solution is to change the governor....try the easy stuff first.
Was there any factory trans , other than a HEMI , that shifted at WOT above 4800 ???
Oh, yeah, 904s in Colts, 4-cyl Jeeps, 340s, etc.
Regardless, the KD linkage must be adjust to specs. (Insufficient T/pressure will cook a trans - quickly!)
Rick
Seen that happen a few times over the years. Ron
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Ron