TRNW-2: 10r80 valve body

[Healy Powertrain]

x2
This is caused by the heavy solenoids damaging the bores, There is a MUST HAVE Tool for resizing those bores:

<https://www.sonnax.com/parts/5620-clutch-control-valve-bore-sizing-tool>

Marcel Verwijmeren
Healy Powertrain
Driveline Solutions
T 06 57745407
E <info at healypowertrain.com>
W <http://www.healypowertrain.com/>


On Tuesday, September 30, 2025 at 1:40:40 am +02:00, pat schulte via trnw2 <trnw2 at trnw.net> wrote:

> Agree Phil, those valves can cause nightmares if they are draggy.
> 
> 
> On Mon, Sep 29, 2025 at 3:24 PM Phil Materi via trnw2 <<trnw2 at trnw.net>> wrote:
> 
> > We tried using Ratiotek kits along with a couple of Sonnax valves (not pr valve due to incompatibility with Ratiotek) and found the transmissions took a very long time to adapt, and had intermittent harsh shifts/engagements. We switched to the Sonnax Zip Kit with the last 3-4 10R80s and couldn't believe how quickly they adapted and worked very well. Just make sure that those control valves fall in/out of their bores with their own weight. They seem very susceptible to sticking with no return springs.
> > 
> > 
> > HTHs
> > 
> > Phil Materi
> > A&B Transmissions
> > Langley, B.C.
> > 
> > 
> > 
> > From: <trnw2-bounces at trnw.net> <<trnw2-bounces at trnw.net>> on behalf of Steve Everett via trnw2 <<trnw2 at trnw.net>>
> > Sent: September 29, 2025 10:34 AM
> > To: Technical Discussion Forum <<trnw2 at trnw.net>>
> > Subject: TRNW-2: 10r80 valve body
> > 
> > 
> > What are most of you doing on the 10r80 valvebody wise ? still using new Ford valvebodies? or using the zip kits on them ? I've noticed the price has creeped up on them from Ford , I just finished one and the valvebody was right at $700, imagine it will continue to increase as time goes on
> > 
> > Steve
> > This message was sent from the TRNW Technical Discussion Forum (trnw2). You were sent this message because you have subscribed to our mailing list. If you don't want to receive these emails from TRNW in the future, please unsubscribe here:
> > <https://www.trnw.net/unsubscribe.php?forum=2>
> > 
> > TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355
> > 
> 
> -- 
> 
> Pat Schulte
> AAMCO Transmissions
> Temecula, Ca.
> 
> This message was sent from the TRNW Technical Discussion Forum (trnw2). You were sent this message because you have subscribed to our mailing list. If you don't want to receive these emails from TRNW in the future, please unsubscribe here:
> <https://www.trnw.net/unsubscribe.php?forum=2>
> TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.trnw.net/pipermail/trnw2/attachments/20250930/ab0c8a1a/attachment.html>