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post #1 of 5 (permalink) Old 09-04-2006, 02:57 AM Thread Starter
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jmods questions

I've got a 95 t bird. The pan is off so I want to do the Jmod to make the tranny last as long as possible. The car will probably remain stock for ever, so a trans for hi hp is not what I need, just long life. My questions are:

1) This may be a dumb question but if I'm reading the tech articles correctly the seperator plate is where all the holes are drilled not the vb right? Short of modifying the seperator plate, nothing is done to the valve body is it?

2) How firm will the shifts be (compared to stock) If I follow the procedure for "MILD"? Like i said, it's stock and don't really want a real harsh shift firm is OK.

Thanks, eric.

Oh, something else ,anyone have or know where I can get the part number for the shifter shaft seal, the one on the side of the case where the lever goes in?
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post #2 of 5 (permalink) Old 09-04-2006, 03:53 AM
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1.You should only be drilling holes in the seperator plate. NOT the valve body. You should be replacing the 1-2 accumulater and springs with the newer models as well as the 2-3 accumulator and spring. Those are the biggest parts. If you want to be more proactive you can change the o/d servo and spring as well, but it can be a hassle if you don't hold the band correctly.
2.As long as you don't leave out any springs the shift shouldn't be that much more firm than shock. The difference will be noticable but it shouldn't throw you around or anything.
Good Luck

"It's all in the reflexes"
Now 96 Mark VIII
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post #3 of 5 (permalink) Old 09-04-2006, 09:24 AM
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read those tech articles at least 2x and take you time so u dont f-up the holes or your going to be shopping for a new seperator plate. ALso your replacing the old 1-2 and 2-3 accum pistons right??

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post #4 of 5 (permalink) Old 09-04-2006, 10:33 AM
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This would also be a good time to upgrade to the 96+ pan for the deep sump, and if you want a drain plug then get a pan from a truck as they had built-in drain plugs. If you go this route be sure to get the correct filter, as a stock 95 filter will not work w/ the deep pan. Maybe also add a tranny cooler to help keep that thing cool.

And of course, when you re-fill it, use Mercon V in it, not Mercon III.

Did you empty the torque converter of fluid as well?

Post up a request in the Ford Parts Counter forum for that shaft seal you need.


These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test.
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post #5 of 5 (permalink) Old 09-04-2006, 12:08 PM Thread Starter
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thanks for all the tips, and yes I plan on doing evertything mentioned by everyone. I'll let you know how it turns out. Everything is closed for the holiday weekend so it's gonna take a few days to round up parts.
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