Quote:
Originally Posted by 1963chevyc20
Ok. Why so bad? My 63 C20 283 3 on the tre gets 15 mpg.
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The rear gears are usually lower with the inlines. I put an S-10 5 speed overdrive trans in my '67 with the 250 and it works great. It improved the mileage but I don't know how much...
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