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Old 08-28-2011, 10:44 PM
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Nailhead T-400 tranny with manuel valve body swap to back to auto

Im going to swap this nailhead th400 back to a full automatic but im not sure what i have to do. Anyone have details? Step by step Pictures ?

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Old 08-28-2011, 10:51 PM
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Quote:
Originally Posted by Petematthews
Im going to swap this nailhead th400 back to a full automatic but im not sure what i have to do. Anyone have details? Step by step Pictures ?
Forward shift pattern or reverse shift pattern?


If it is a forward shift pattern the mods for full manual shifts are different from brand to brand of manual valve body.

Need more information
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Old 08-28-2011, 11:24 PM
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how to

How would i go about finding that out? The tranny was in a speed boat.
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Old 08-29-2011, 06:17 AM
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Quote:
Originally Posted by Petematthews
How would i go about finding that out? The tranny was in a speed boat.

You need an experienced transmission person to look at this unit. I would venture a guess that the shift pattern is 'forward pattern" ; P R N 3 2 1 ..

If the trans was used in a boat, often all the parts used for "park" is removed since they are not needed in a boat.

Often the trans internal linkage is also blocked so first gear is not used.
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Old 08-30-2011, 12:43 PM
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i'd rather do it my self

I see, I'm looking to learn by trial and error, I'm not going to learn anything by taking it to someone unless they show me what i need to be looking for.
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Old 08-30-2011, 07:19 PM
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Quote:
Originally Posted by Petematthews
I see, I'm looking to learn by trial and error, I'm not going to learn anything by taking it to someone unless they show me what i need to be looking for.

An experienced person will know what to look for as the modifications. Sometimes reverse gear is also deleted.

Boat people say reverse gear in some setups can cause the prop retaining nut to back off and an expensive prop drops to the bottom of the lake. I would think there is a way to prevent that.. but I am not a boat person.

good luck. post more questions if you have them. Plenty of folks here to help
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Old 08-30-2011, 11:06 PM
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Trans

Sounds like I may have picked up a parts tranny, but I'm still going to tear into it and see if I can figure out what I've got. If I can swap it back that would be ideal but I have another one so I can use it for parts if all else fails
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Old 08-31-2011, 10:38 PM
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Quote:
Originally Posted by Petematthews
Sounds like I may have picked up a parts tranny, but I'm still going to tear into it and see if I can figure out what I've got. If I can swap it back that would be ideal but I have another one so I can use it for parts if all else fails

pull the pan and have a look see. Post a few photos if you can. Maybe all the parts are there

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Old 10-19-2011, 04:38 PM
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I was able to get my Super Turbine code BL trans out of a 64 buick electra 225 nailhead partially taken apart today. It has a new disconnected solenoid, the fluid is RED and i don't smell anything burnt as of yet. It has a heel print in the pan with one dimple and the torque converter has the center spot welds which according to some people online is a switch pitch converter. I plan to use this trans for parts if i can as i have the manual valve body 400 out of a boat i will get into next. The red 400 is the one out of a boat. I will possibly be looking for a rebuild kit or at the very least a set of gaskets.
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Old 10-20-2011, 10:12 PM
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Quote:
Originally Posted by Petematthews
I was able to get my Super Turbine code BL trans out of a 64 buick electra 225 nailhead partially taken apart today. It has a new disconnected solenoid, the fluid is RED and i don't smell anything burnt as of yet. It has a heel print in the pan with one dimple and the torque converter has the center spot welds which according to some people online is a switch pitch converter. I plan to use this trans for parts if i can as i have the manual valve body 400 out of a boat i will get into next. The red 400 is the one out of a boat. I will possibly be looking for a rebuild kit or at the very least a set of gaskets.

Switch pitch t-400 trans is easy to tell from regular t-400 by the stator tube design at the input shaft. Splines on stator tube are more narrow and there is a smooth section with hole in it for oil to flow. I have photos of this which would make the ID for you easy. Cant find the foto this evening, must be on the other computer.

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Old 10-21-2011, 01:30 AM
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Most of the Pans have 3-dimples & the Heel print. The Heel print's where the filter Pickup sets.
Those Filters are pricey. http://www.transmissionpartsusa.com/...-000046919.htm

Alot of SP Info here >> http://www.442.com/oldsfaq/oftsp.htm
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Old 11-12-2011, 01:13 PM
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here is a photo of the switch pitch stator tube of the t-400 trans. This will be sticking out the front of the pump.

Notice narrow splines and long smooth section with an oil hole in it.

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