6066 (1960-1966) GMC Truck Club
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6066 (1960-1966) GMC Truck Club (https://6066gmcclub.com/index.php)
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-   -   Fuel Mileage (https://6066gmcclub.com/showthread.php?t=48389)

TJ's GMC May 2nd, 2017 05:52 AM
Re: Fuel Mileage
 
305E with a 600 cfm eddy 4 barrel, dual exhaust, hei, 32 inch tires, 4.11 rear gear, sm420. Best I got was approximately 13 at 54 MPH. Round 2400 RPM.


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