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Old 12-22-2013, 10:33 PM   #4
kulas44
Guru
 
City: Venice Louisiana
Country: United States
Join Date: Dec 2013
Posts: 1,097
Covington and J&T did lots of things to the 71 and 92 series engines. A 4/71 at 330 hp sounds like one of those. Probably as good as the 8v71 at 650 hp. If ran hard expect very low hours before needing refreshed. If ran conservativly they can last a long time, but, at low loads they tend to "load up". They are definitely turbo'd/inner cooled and more than likely have blower bypasses. Not a good "slow" engine.
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