Correct use of Torqueflite 727 Red Billet Servo????

[HAHNAGON]

Can anyone tell me how to correctly install this aftermarket billet servo? With a spring or without a spring? I can't find any clear information on it. Mine does not fit together very smoothly and I'm sure atf will help with that, but I wanted to run it by someone who has used it before. Any recommendations are welcome. Even if you tell me to throw it away, lol. Thank you.

 

[R413]

Contact the manufacturer.

How does a servo return without a spring? Not very well!

 

[HAHNAGON]

Can anyone tell me how to correctly install this aftermarket billet servo? With a spring or without a spring? I can't find any clear information on it. Mine does not fit together very smoothly and I'm sure atf will help with that, but I wanted to run it by someone who has used it before. Any recommendations are welcome. Even if you tell me to throw it away, lol. Thank you.

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I put it together without it and it shifts fine. However it doesn't have the quick, snappy shift like my last 727 that had one it. I put a transgo tf1 and a billet accumulator with blocker in it as well.

 

[oldkimmer]

It needs the spring. Without it you’re slowly killing the tranny. Kim

 

[HAHNAGON]

I put it together without it and it shifts fine. However it doesn't have the quick, snappy shift like my last 727 that had one it. I put a transgo tf1 and a billet accumulator with blocker in it as well.

I meant I put the trans together without the aftermarket servo.

 

[HAHNAGON]

It needs the spring. Without it you’re slowly killing the tranny. Kim

Yes. I put the factory servo and spring back in it and everything is fine, is what i meant by that. But I'm still curious because now I'm just sitting on this part. I'm sure I'll drop the pan again and if I know the correct installation I would like to try it.

 

[oldkimmer]

I put it together without it and it shifts fine. However it doesn't have the quick, snappy shift like my last 727 that had one it. I put a transgo tf1 and a billet accumulator with blocker in it as well.

Every 727 seems to have a little different shift on account of the valve body and clearances in the clutch packs and the band adjustment as well the lever ratio. Kim

 

[Dave6T4]

I think that red servo is meant to replace the soft-shifting "controlled load" servo in later '70's transmissions. I used to block the accumulator piston, but found that caused harsh part-throttle shifts. I ended up just leaving the accumulator spring out. Chrysler did this with some truck transmissions.

 

[HAHNAGON]

?

 

[HAHNAGON]

I finally got the instructions from Sonnax.