Does anybody have any gas milage experience with the twin progressive 2 barrel Carter-Webbers Langdon sells? I read another post where someone was getting in the low 20s with the 5 spd o/d, open diff with highway gears, twin two-barrels and HEI.
'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi
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