Quote:
Originally Posted by special-K
Some incredible mileage stories with 6.2s. Makes me wonder how two identical engines/drivetrains/tires can get such different (like 10mpg) mileage. My '85 Jimmy w/6.2/700r4/NP208/3.08s/235/75-15s got 22. With diesel torque you can actually keep your mileage when increasing to larger tires and going to lower gears. It now has 12.50/35 tires and 4.10s and still gets 22 mpg. So did my '91 6.2 Suburban with the same axles and tires. That's hwy mileage.
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The 82 was buit for economy when fuel had spiked to $1.60/ gallon from $0.80 . It had smaller pre-chambers, diffrerent injectors, and a different curve on the DB2. The rear gears were setup to keep the engine in its' sweet spot if you were careful.