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Old 06-28-2003, 08:24 PM
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Th350 going to break, how to make spacer plate holes smaller?

I think I posted here about the homemade trans mods I did.
I took a transgo spacer plate with the welded on transfer plate and drilled the first and second feed holes to 3/16"
Then I blocked the movement of the manual low control valve, drilled a 1/16" in one of the valve body passages to prevent fluid loss to the converter at heavy throttle, and put a pin in the second accumulator feed hole.
Put in five direct frictions and reduced the clutch clearances down.
My intentions were to get firmer shifts with a 3200 rpm converter, but I never got around to using it.
So it ended up in my '92 454 dually with a stock converter It'll knock your coffee cup out of the cup holders and give you a neckache. It'll also chirp second and third which I don't think is good for it at all, especially in a one ton truck with four 7" wide tires on the back.

I removed the pin blocking the second accumulator, so both accumulators work now.
I think I need to make the 1 and 2 feed holes smaller, How can I do this without getting a new plate?
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Old 06-29-2003, 09:16 AM
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you can use a nail set punch(sharp point) to close the holes up up some. With t he plate on a flat & HARD surface use the punch to peen the plate around the diameter of the hole you wish to close up.

it is a tidous process, but does work. Since you drilled the holes sooooo big it may not help you.

If you have the OEM plate you can drill it to use the fluid trans-fer plate from the TransGo plate. Grind the spot welds off on the back side, smooth it up and you are good to go. You will need some extra valve body gaskets perhaps.

you may want to close up the hole slightly you drilled for line to lube in the valve body. If the hole is too big you can actually balloon the converter. At 1/16 size you dilled , it is as big as you want that hole to be.


If you take a shift plate hole and increase it's size by 1/3 (33%) with the same oil volume and pressure behind it..... you will double the volume of oil through it.
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Old 06-29-2003, 09:41 AM
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I'm learning, the intention was to feel the shifts with a high stall converter, I like that, but it never made it into the vehicle it was built for. It's now in something with a stock converter.
The 1/16" hole in the vb idea came from a fairbanks/superior products kit.
The extra large feed hole idea came from a b&m kit.
Now I know what not to do:laugh:

I have a transgo plate without the fluid transfer plate, that sounds like the easiest thing to do...remove the transfer plate and use it with another vb plate.
Thanks once again for sharing your knowledge.
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Old 06-29-2003, 03:02 PM
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I failed to mention that if you use the transfer plate on an OEM plate or a plate that was NOT setup for it's use, there is a hole that must be plugged to avoid pressure feedback to the low/revrse friction pack.

I believe you are familar with this hole?

Tony
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Old 06-29-2003, 03:49 PM
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I'm not positive on the hole location, I was going to make sure the plates both match exactly.
I know it needs it because the direct center seal is removed too. I think i remember you saying it helps to remove the center seal even when a transfer plate is used.
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Old 06-29-2003, 04:43 PM
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Quote:
Originally posted by Crosley
I failed to mention that if you use the transfer plate on an OEM plate or a plate that was NOT setup for it's use, there is a hole that must be plugged to avoid pressure feedback to the low/revrse friction pack.

I believe you are familar with this hole?

Is it hole D here
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Old 06-29-2003, 09:31 PM
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Quote:
Originally posted by Jason
Is it hole D here

============= yes
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Old 06-30-2003, 10:29 PM
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Well it turned out great. I had a transgo look a like plate that had a indention shaped like a 7 under the front support plate, didn't like the looks of it so I dug through one of my cores and found a plate with transgos name on it.
It had no transfer plate or holes for one so I grinded the transfer plate off the old sep plate and drilled the holes for it in the new one and left every thing else untouched.
Shifts perfect now.
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