727 input shaft question
#878804
12/13/10 09:58 AM
12/13/10 09:58 AM
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Joined: Aug 2005
Posts: 759
Southington Ct.
turbobitt
OP
super stock
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OP
super stock
Joined: Aug 2005
Posts: 759
Southington Ct.
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I was doing an inspection on my transmission and came accross this issue. The input shaft appears to have some small amount of play between itself and the input hub.I confirmed this visually upon dissassembly.
Does anyone have an opinion as to this being OK ? Don't ever remember seeing this before.
Allan G.
1970 Challenger w/572 Hemi street car and my pride and joy.
1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno.
1976 Cee Bee Avenger Jet Boat - 460 Ford powered.
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Re: 727 input shaft question
[Re: turbobitt]
#878811
12/13/10 10:33 PM
12/13/10 10:33 PM
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Joined: Jan 2003
Posts: 16,923
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,923
NC
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Quote:
Quote:
On the 727's I have done, the input shaft splines are a light press fit into the clutch hub (no play); plus the retaining ring.
Retaining ring in intact. I can move the input fore and aft with respect to the hub, but very little.
Allan G.
OK, so it slides axially on the splines, not play in the rotation (torque).
It is common for the clutch hub to have play in the outer retainer (snap ring), but I haven't seen the splines get loose.
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Re: 727 input shaft question
[Re: turbobitt]
#878813
12/14/10 11:30 AM
12/14/10 11:30 AM
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Joined: Jan 2003
Posts: 74,948
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,948
U.S.S.A.
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Quote:
Quote:
Quote:
Quote:
On the 727's I have done, the input shaft splines are a light press fit into the clutch hub (no play); plus the retaining ring.
Retaining ring in intact. I can move the input fore and aft with respect to the hub, but very little.
Allan G.
OK, so it slides axially on the splines, not play in the rotation (torque).
It is common for the clutch hub to have play in the outer retainer (snap ring), but I haven't seen the splines get loose.
No, there is also some small play rotationally. I can feel it and also see is move with resect to the hub. I'm starting to guess if it was like this before OR if it will get worse.
Allan G.
If you can rotate it I would call it junk. The shaft is a light press into the hub , if you pull the ring I wouldn't be surprised if the shaft pulled out by hand which is not good .
Get a new input assembly and be done . 
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Re: 727 input shaft question
[Re: JohnRR]
#878817
12/14/10 05:26 PM
12/14/10 05:26 PM
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Joined: Jan 2003
Posts: 25,729
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,729
Rio Linda, CA
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The 3-ring is '78 and later, the 3rd ring is necessary with the lockup converter.
The INTERNET, the MISinformation superhighway
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