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Old 12-04-2019, 01:41 PM   #19
Willowrun
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Join Date: Mar 2013
Location: Ann Arbor, MI
Posts: 1,021
Re: 78 K20 towing with 454

My old tow rig. 454, TH400, 3.73’s, rear helper bags, and 265 tires.
I towed with this combo for years with similar or heavier loads shown at 65-70MPH. Never checked mileage but the motor was in the sweet spot at those speeds.
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