TRNW-2: 6r140 valve body and sonnax tooling

[John Lovell]

In my mind I always go back to the expression, "for every dollar you try
and save the customer, it will cost you five'. My thoughts are it's not MY
truck. Customer pays not me. In this example he is going to get new
solenoids as well as a new VB. Sonnax is very proud of their stuff. I would
have to be doing at least 1 a month to justify. I've built 3 ever.



On Tue, Dec 30, 2025 at 2:46 PM Justin Merritt via trnw2 <trnw2 at trnw.net>
wrote:

> Hello all,
> I am starting to see more and more 6r140s hit my bench.  I am comfortable
> with working on them with great success.  I have always just replaced the
> valve body with a ford OEM, but it seems these valve bodys are getting
> priced to where I may need to look at repairing them vs replacing them.  I
> do not mind investing in sonnax tooling that is needed to fix
> transmissions.  However, I don't believe in needing to ream and oversize
> every valve just because there is something available.  What are the high
> wear areas that will need to be addressed if I decide to tool up and repair
> these valve bodys?
>
> Thanks Justin
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