The rear band must also be applied along with the front clutch for the trans brake to work. Otherwise you'd just have high gear. My T/A brake says it has a timed release of the rear band. How it works though I don't know as I've never really looked into it in depth to see how the fluid is routed through the valve body.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
| 
