i have dual rochester b's on my 54/3100. it gives me enough power to run a 2.73 nova rearend with a s-10/ t-5 trans and 235-70-15 tires. as far as mileage i don't have a working speedometer right now. not lon ago had a working odometer and i got 12.5 on road and 9.5 around town, partly because of the dual carbs and misadjusted carbs, to rich. hope this helps. ron btw i also have dual exhaust.


Ron, The Computer Greek
I love therefore I am.
1954 3100 Chevy truck
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2017 Buick Encore
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1960 MGA Roadster Sold 7/18/2017