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Hey I bought 87 F250 2wd diesel 6.9L with 4 speed like your. PO say farmer could swap 4.10 in axle but cab on f250 say 3.55.
It seem it too slow on highway. 60-63 mph at 2,500 rpm
What best mpg that huge improve on this? Oh by way it never got hot enough it stay COLD due fan frozen spin since Outside was 10oF here.
PO say t got 18 at 50-55 mph. He never fix diesel leak on Injector's cap so now I need get new cap with o ring for that.
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