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Tranny
#3036938
04/25/22 11:47 AM
04/25/22 11:47 AM
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Joined: Mar 2005
Posts: 2,060
Pendleton NY
terzmo
OP
top fuel
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OP
top fuel
Joined: Mar 2005
Posts: 2,060
Pendleton NY
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1967 R/T and when sitting for more than a few days , when starting in park, it would not go into drive or reverse very well. Putting it in neutral, while running, it would engage just like new. Rebuilt a newer BB727 and new converter. Swapped the valve body from the old to new trans. Issue is actually worse then before but going to neutral fixes the issue. The only common denominator is the valve body. Can this be the cause? Thanks in advance. Addition. I drove it for about 25 miles yesterday and when starting in park it didn't want to move. Worse than before as if I drove it daily or within a few days, there was no issue.
Last edited by terzmo; 04/25/22 11:49 AM.
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Re: Tranny
[Re: terzmo]
#3036972
04/25/22 01:22 PM
04/25/22 01:22 PM
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Joined: Mar 2011
Posts: 3,206
Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,206
Michigan
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1967 R/T and when sitting for more than a few days , when starting in park, it would not go into drive or reverse very well. Putting it in neutral, while running, it would engage just like new. Rebuilt a newer BB727 and new converter. Swapped the valve body from the old to new trans. Issue is actually worse then before but going to neutral fixes the issue. The only common denominator is the valve body. Can this be the cause? Thanks in advance. Addition. I drove it for about 25 miles yesterday and when starting in park it didn't want to move. Worse than before as if I drove it daily or within a few days, there was no issue. Some guys drill the valve body at the torque converter regulator valve and this will cause a more rapid converter drain. Warm it up and drive it, then verify the fluid level in neutral before shutting the engine off. Check the fluid level the next day before starting. If the fluid is very high on the stick then likely you have excessive drainback. Start it and once you get a good engagement check the fluid again, it should be much lower now. Excessive pump face clearance causes this as well.
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Re: Tranny
[Re: A727Tflite]
#3037024
04/25/22 04:34 PM
04/25/22 04:34 PM
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Joined: Mar 2005
Posts: 2,060
Pendleton NY
terzmo
OP
top fuel
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OP
top fuel
Joined: Mar 2005
Posts: 2,060
Pendleton NY
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Checked it when cold and stick was way over...started..ran...stick said 1/2 qt down. So CAN it be the valve body?
Last edited by terzmo; 04/25/22 04:34 PM.
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Re: Tranny
[Re: terzmo]
#3037028
04/25/22 04:39 PM
04/25/22 04:39 PM
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Joined: Mar 2011
Posts: 3,206
Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,206
Michigan
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Checked it when cold and stick was way over...started..ran...stick said 1/2 qt down. So CAN it be the valve body? If the problem followed the valve body then it could. Try a bone stock valve body. Or just start it in neutral and wait a few seconds.
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Re: Tranny
[Re: stumpy]
#3037092
04/25/22 08:09 PM
04/25/22 08:09 PM
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Joined: Jan 2003
Posts: 16,012
Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,012
Omaha Ne
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Sitting for a few days allows the converter to drain. The fluid doesn't pump in park so you need to start in neutral which does circulate the fluid. It's basically normal for that to happen. trans go makes a no yo yo kit to cure that.  Used to be called morning sickness  Will usually get a bit worse over a long period of time like 50K miles. I was told many years back that the condition was due to excess clearance between the converter and bushings. Maybe JK or Tman can confirm or deny that. Doesn't seem to bother anything as along as the neutral thing is done before dropping into gear as I drove my 66 wagon with it go over 50k miles. This was before the Trans go No Yo Yo Kit was out there or before I became aware of it. I believe they have incorporated the "fix" into all of their shift kits Feel free to correct me if I am in error 
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Re: Tranny
[Re: John_Kunkel]
#3037107
04/25/22 09:17 PM
04/25/22 09:17 PM
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Joined: Mar 2005
Posts: 2,060
Pendleton NY
terzmo
OP
top fuel
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OP
top fuel
Joined: Mar 2005
Posts: 2,060
Pendleton NY
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Or install a Transgo No Yo-Yo kit. I assume this cannot be installed with the tranny in the car?
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Re: Tranny
[Re: terzmo]
#3037108
04/25/22 09:20 PM
04/25/22 09:20 PM
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Joined: Jan 2003
Posts: 28,730
Shopping @ HoBo Fright
340SIX
Doc Flappergas's Evil Twin
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Doc Flappergas's Evil Twin
Joined: Jan 2003
Posts: 28,730
Shopping @ HoBo Fright
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Put the simple shift kit on so you do not get converter drain like you have now
The member who posted above was on the money saying to do so.
Last edited by 340SIX; 04/25/22 09:20 PM.
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Re: Tranny
[Re: terzmo]
#3037221
04/26/22 11:13 AM
04/26/22 11:13 AM
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Joined: Jan 2003
Posts: 75,326
A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,326
A gulag near you.
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Or install a Transgo No Yo-Yo kit. I assume this cannot be installed with the tranny in the car? Yes it can, pull the valve body and do it on the bench , re install the valvebody. The part you are replacing is the shift(manual) valve , it allows more fluid flow in park than the stock valve does.
Last edited by JohnRR; 04/26/22 01:18 PM.
Mainstream Media is the new Pravda
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Re: Tranny
[Re: TJP]
#3037249
04/26/22 12:31 PM
04/26/22 12:31 PM
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Joined: Jan 2003
Posts: 26,887
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,887
Rio Linda, CA
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There are no converter anti-drain back provisions in the Torqueflite, drain back is perfectly normal...as long as there is any clearance in the pump bushing, fluid will drain from the converter when sitting (or when idling for prolonged periods in Park). Of course, the more clearance, the quicker it will drain.
Much ado about this, but the cure is either starting in Neutral or installing the redesigned manual valve.
The INTERNET, the MISinformation superhighway
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Re: Tranny
[Re: John_Kunkel]
#3037258
04/26/22 01:05 PM
04/26/22 01:05 PM
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Joined: Dec 2009
Posts: 21,208
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 21,208
in a cattle trailer down by th...
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You can buy just the valve from Sonnax.
"Come get your wife"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Front and rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Tranny
[Re: JohnRR]
#3037377
04/26/22 08:37 PM
04/26/22 08:37 PM
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Joined: Mar 2005
Posts: 2,060
Pendleton NY
terzmo
OP
top fuel
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OP
top fuel
Joined: Mar 2005
Posts: 2,060
Pendleton NY
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Or install a Transgo No Yo-Yo kit. I assume this cannot be installed with the tranny in the car? Yes it can, pull the valve body and do it on the bench , re install the valvebody. The part you are replacing is the shift(manual) valve , it allows more fluid flow in park than the stock valve does. So does this also make the tranny a manual shift only ? thanks for the info. Approximate cost and where to get?
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Re: Tranny
[Re: terzmo]
#3037761
04/27/22 08:10 PM
04/27/22 08:10 PM
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Joined: Jan 2003
Posts: 16,012
Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,012
Omaha Ne
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Or install a Transgo No Yo-Yo kit. I assume this cannot be installed with the tranny in the car? Yes it can, pull the valve body and do it on the bench , re install the valvebody. The part you are replacing is the shift(manual) valve , it allows more fluid flow in park than the stock valve does. So does this also make the tranny a manual shift only ? thanks for the info. Approximate cost and where to get? No on the manual shift, AMAZON LINKlikely able to find elsewhere as well, Trans go part # SK TF SC
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