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Re: 19.5 Mpg!
That's great! I know the '88 350 TBI in a 2wd would get 19-21 on the highway. Are you running the original TBI swirl port heads?
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'68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD 
'72 K20 500 Cad/TH400/NP205 SOLD
'92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver
'72 Monte Carlo... sweet low mile toy
'11 Dodge Challenger IE 392 6spd... midlife car 
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