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727 issues #3130366
03/18/23 04:07 PM
03/18/23 04:07 PM
Joined: Jan 2003
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Hot Rod Ridge
FastmOp Offline OP
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Trying to rebuild a 727. Need to take two and get one good one out of the parts. Trying to put most of my big block guts in a small block case. Having issues with parts interchangeability .

I'm using a turbo action trans break valve body.

16791698379123263104221342639481.jpg16791699867374781357412899281544.jpg
Re: 727 issues [Re: FastmOp] #3130367
03/18/23 04:08 PM
03/18/23 04:08 PM
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Hot Rod Ridge
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The left holes are different between the two cases.

Now I have some of my parts mixed up. Can I use the small block case parts and if so. What's the description of parts in the 1st accumulator on the left for the bottom case.

Last edited by FastmOp; 03/18/23 04:28 PM.
Re: 727 issues [Re: FastmOp] #3130399
03/18/23 05:28 PM
03/18/23 05:28 PM
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Rio Linda, CA
John_Kunkel Offline
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Originally Posted by FastmOp
What's the description of parts in the 1st accumulator on the left for the bottom case.


That's the kickdown servo with the piston at the bottom of the bore. The bore in the case will accept any assembly with the main difference being the pre-'71 setup with the piston that is pictured (preferred) or the '71-later controlled-load servo with the larger diameter plunger. Pre-'71 is the top pic, controlled-load is bottom pic.

Frontservoearly.jpgFrontservo.jpg

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Re: 727 issues [Re: John_Kunkel] #3130403
03/18/23 06:12 PM
03/18/23 06:12 PM
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Hot Rod Ridge
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Thanks. I think I didn't remove the inner plunger. Sorry my description of the parts is not on point. I do one of these every few years. It's for my roadrunner.

Re: 727 issues [Re: FastmOp] #3131520
03/22/23 07:12 PM
03/22/23 07:12 PM
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Hot Rod Ridge
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Almost done with this. But it has way to much end play. Going to add a brass washer in a plant.

IMG_20230317_182134591.jpg
Re: 727 issues [Re: FastmOp] #3131554
03/22/23 08:56 PM
03/22/23 08:56 PM
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Michigan
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Originally Posted by FastmOp
Almost done with this. But it has way to much end play. Going to add a brass washer in a plant.


What?

Re: 727 issues [Re: FastmOp] #3131562
03/22/23 09:13 PM
03/22/23 09:13 PM
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Ambridge, Pa.
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rickraw Offline
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Sumting Wong

Re: 727 issues [Re: rickraw] #3131576
03/22/23 09:57 PM
03/22/23 09:57 PM
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Hot Rod Ridge
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I have about.090 end play. I must have forgotten a brass wear plate or something lol.

Re: 727 issues [Re: FastmOp] #3131658
03/23/23 11:55 AM
03/23/23 11:55 AM
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Renton Wa
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topfueldart Offline
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Originally Posted by FastmOp
I have about.090 end play. I must have forgotten a brass wear plate or something lol.


Planetary endplay is totally separate from unit endplay, how are you measuring?


11.48 @ 120 with a 1.80 60' 318, stock 1.88 heads, stock 904, Pump Gas, 13 lbs of boost.

9.94 @ 134, 318 on pump gas, 14 lbs w/ Eddies, transbrake 727, 3600 lbs, 3.54 gear and 28's.
Re: 727 issues [Re: FastmOp] #3131681
03/23/23 12:51 PM
03/23/23 12:51 PM
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U.S.S.A.
JohnRR Offline
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Originally Posted by FastmOp
Almost done with this. But it has way to much end play. Going to add a brass washer in a plant.


Looks like you put it into reverse at about 50mph ... whistling


running up my post count some more .






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