TRNW-2: 10r80 valve body

[Phil Materi]

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
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