727 in reverse issues all of a sudden rpm w/lba
#2791497
07/01/20 01:09 PM
07/01/20 01:09 PM
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Joined: Jan 2003
Posts: 1,365 elmira ny
hp340nos
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,365
elmira ny
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hello i recently ran into issues with transmission.. when put into reverse acts weird.sometimes it will back up normal other times ,you have to give it alot of throttle and when it does move, it like chatters the tires.like its fighting itself?then sometimes it will back up with barely any throttle.ive done the following dropped the valve body,Air checked front rear clutches and low/reverse servo and front servo everything is applying and releasing.adjusted low/reverse band. i can drive the truck up and down the road and all forward gears shift as it always has.any ideas? tranny is built with following cheetah rpmvb w/lba added later by john cope,red clutches, kolene steels,both bands were new and red lined material.4.2 lever.hd spring and extra thick rear servo cover,upgraded reaction support oil mods,i have everything written down with all specs from when i rebuilt it. thanks
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Re: 727 in reverse issues all of a sudden rpm w/lba
[Re: Cab_Burge]
#2791589
07/01/20 04:28 PM
07/01/20 04:28 PM
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Joined: Feb 2004
Posts: 35,047 S.E. South Dakota !
bigdad
Still Posting A Lot
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Still Posting A Lot
Joined: Feb 2004
Posts: 35,047
S.E. South Dakota !
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Mine did something similar when the brake button was messed up .., took it apart and cleaned it and was back to normal
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: 727 in reverse issues all of a sudden rpm w/lba
[Re: hp340nos]
#2791603
07/01/20 05:28 PM
07/01/20 05:28 PM
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Joined: Jan 2003
Posts: 4,806 Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,806
Moved to N.E. Tennessee
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cheetah rpmvb w/lba added later by john cope I would be interested in knowing how he did this. Anybody know? Does it affect the crisp shifts of a cheetah vb? I guess more importantly, could this mod be what is causing the o.p.'s problem?
Last edited by GomangoCuda; 07/01/20 05:33 PM.
In theory, there is no difference between theory and practice. In practice, there is.
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