Re: Rockwell T-221 durability for the long haul
I have run one for about 80k behind a cummins 4bt and have had no problems, but if you plan to run highway speeds, 70+ loaded heavy for prolonged travel it will get hot, so an NP205 upgrade would be wise.
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63 k20 with cummins 4bt, owned sence 1982
Last edited by dieseldude4bt; 05-24-2018 at 07:45 PM.
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