Re: C10 Build - what's the latest/greatest swap for best mileage?
First choice 4.8/4L60E
Second choice Tuned Port 350/700R4.
My '83 K20 went from 14mpg to 17 just by swapping in a complete '91 TPI from a Corvette. It has a 700R4 and 3.42 gears.
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'83 K20-TPI
'73 C10
'79 C10-ex-diesel(SOLD)
'07 Tahoe(Son driving)
'14 Suburban-DD
'71 C10-current project
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