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Old 12-13-2010, 12:03 AM   #3
Allensracing
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Join Date: Dec 2010
Location: Paradise, ca
Posts: 295
Re: Need some help here.

expect 10-12 mpg empty with a tailwind.
expect less than 8 hauling loads or hauling a**
74 should have HEI, so make sure you do a basic tuneup.
if you want to increase mileage and performance, your first modification should be the exhaust system.
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