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Old 05-24-2018, 01:42 PM   #2
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Join Date: Mar 2011
Location: Co
Posts: 389
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.
63 k20 with cummins 4bt, owned sence 1982

Last edited by dieseldude4bt; 05-24-2018 at 07:45 PM.
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