Tf-727 Forward clutch drum

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bcuda1$3$

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Here is my forward drum from my torqueflite 727. This is my first rebuild. it’s going pretty well, but I am slightly worried about this drum surface. It’s very smooth but it seems to have slight pitting. And I mean very slight can’t hang my fingernail on it slight. But it is there. Does the band even fully ride in these two areas of concern? Will I soon wear my new band out? My video I’m going by says do not use Emory on this facing. I did take some atf and green scotch bright pad and did some cleaning to it. Any ideas? Thanks

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The first pic you show with the key pointing at the mark worries me .
I’m not certain how it would work out .

The other pic of the other side is beyond where the band rides,,,it shouldn’t cause any problems .
Myself,,,,if I was using this transmission for a performance application,,,I would replace the drum .
If it was a high mileage daily driver,,,,,you won’t ever hurt the new band .

I would use some 400 grit cloth,,,,and then go with the Scotchbrite .
At least hit the rough patches with the 400,,,,,and then polish the rest .

Tommy
 
Stock Drums and even Cores are not expensive.

I would not use it myself, but I am tired of R and R
Transmission after 70 years if I gamble on something.
 
Agree with GTX John. Would not use that drum. The damaged areas might grab the band material & cause premature wear. The drum is rotating at high speed when the band grabs it...
 
Yes it’s a weekend driver with a non performance 318. I ve found on another site someone referenced the Monroe tf book that one CAN use Emory cloth on this.
 
I would have some polish it on a lathe (so its spinning) the same as you would do a crankshaft to get the RIGHT surface before i would work on individual spots with emery paper.
And yes, GTXJohn is telling you the right answer.... it would be different if you were talking about a part thats difficult to replace.
 
Just get another one from WIT Transmissions. I wouldn't run it.
 
You can probably find a cheap good used one from someone who's upgraded to a billet drum. I know I have one in my parts bins somewhere from my 727 build. Put a wanted add up - I'm sure you'll have several responses pretty quickly.
 
Is there a machine shop near by? Chuck it up and make a pass. A few thousands may clean it up. The band will never know.
 
Toolmanmike….. finally a voice of reason. A lil sandpaper love and it’ll be fine. A greater concern to me would be that the sealing surfaces where the apply piston ride. If they’re good send it!
 
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