Allison 10L1000 10 speed valve body fixes

ikeG

Oughta Know Better
Apr 19, 2011
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189
63
Western PA
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I have a customer with a high mileage 2021 with no current issues. Wants to update his valve body before anything comes up. What do I need from sonnax? Just the high and low feel limit valve kits?
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
23,053
8,089
113
Phoenix Az
At this time, yes. Verify the check balls are not wearing out (they are plastic), thermostat moves freely and a spring free length check on the rest of the valves isnt a bad idea. If you can vac check ports, that be real beneficial too