TRNW-2: 6r140 valve body and sonnax tooling

[Steve Everett]

  I agree John !  when we ream a valvebody or  put a kit in one and reuse
it , we're gambling on whether it will work correctly for whatever length
of time we feel responsible for it,  and sometimes that comes back to bite
us!   But I guess it depends on how the job is sold ?  if a shop gives a
set price and doesn't factor in a new VB in that price then it makes sense
for them to try and reuse it if possible,   if the shop sets their prices
high enough to include a new VB then they don't have to worry about it .
       I have a reputation for building units without replacing unnecessary
parts ,  but many times that has caused me to have to go back into a unit
and replace or rework a VB whereas if I had simply replaced it with new I
wouldn't have had to go back into it , I've always discussed that with the
owner or manager before deciding, and most would rather try to save $$ and
use the original VB if possible,  the shop I'm currently at would rather
charge the customer for a new VB up front and then we don't have to worry
about it later,  (usually)   I say it that way because I've had multiple
10R80 brand new valvebodies that were faulty

   Steve

On Wed, Dec 31, 2025 at 9:00 AM John Lovell via trnw2 <trnw2 at trnw.net>
wrote:

> 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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