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Old 05-24-2018, 09:46 AM   #1
Active Member
Join Date: Jul 2014
Location: Los Gatos, Ca.
Posts: 196
Rockwell T-221 durability for the long haul

Hello all,

My newly acquired 66 K20 has the stock T-221 t-case and it seems to work normally. But I've read that they may have oiling issues and get hot, which can end badly.
My intended usage for my truck will see many miles of prolonged highway travel, loaded heavy. Will this be a problem for the T-221? Or should I start looking for an NP-205 to swap in?
1966 K20 flatbed
1962 C20 Stepside
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