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Lock up to non-lockup conversion? #1390721
02/20/13 10:00 AM
02/20/13 10:00 AM
Joined: Oct 2003
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WASHINGTON, PA
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11secaarcuda Offline OP
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11secaarcuda  Offline OP
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WASHINGTON, PA
Can a lockup transmission (727,904, 500, 518) be converted to a non lockup? What would need changed?

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Re: Lock up to non-lockup conversion? [Re: 11secaarcuda] #1390722
02/20/13 10:51 AM
02/20/13 10:51 AM
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JohnRR Online rolleyes
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yes it could , you'd have to change the input shaft , the front pump and the valve body

Re: Lock up to non-lockup conversion? [Re: JohnRR] #1390723
02/20/13 11:08 AM
02/20/13 11:08 AM
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Weatherford Texas
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Greg Ducato Offline
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You can leave all the trans components intact, block the stroke of the lockup valve and remove the clutch from the converter. This may be an easier solution in some instances.

Re: Lock up to non-lockup conversion? [Re: Greg Ducato] #1390724
02/20/13 11:12 AM
02/20/13 11:12 AM
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JohnRR Online rolleyes
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Quote:

You can leave all the trans components intact, block the stroke of the lockup valve and remove the clutch from the converter. This may be an easier solution in some instances.




That certainly would be easier , especially if you were buying an aftermarket convertor .

Re: Lock up to non-lockup conversion? [Re: JohnRR] #1390725
02/20/13 06:19 PM
02/20/13 06:19 PM
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Rio Linda, CA
John_Kunkel Offline
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If the goal is to simply eliminate the lockup in a 727 or 904, blocking the lockup valve is the simplest solution. For the 500 and 518 just don't hook up the wire.

If one wants to use an aftermarket non-lockup converter it will have a different input shaft spline so the non-lockup parts will have to be swapped in.


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