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Yadkin
05-08-2017, 12:41 PM
Reporting my fuel mileage, hoping to compare what others are experiencing. 93 Octane E10 gas. Running average over the last 788 miles:

10.6
11.8
11.5
11.6
11.1

DKheld
05-08-2017, 01:42 PM
Of course this is in my '60 which is a little less aerodynamic :D but an interesting thread Steve.....

Rebuilt 352 (possibly a 360 - haven't checked - bought it with no papers) and standard cruise-o-matic trans using 87 Octane "Regular" unleaded. Has a brand new 0-80457S 4160 Holley carb w/ elec. choke (aka POS).

11.2 (highway only)
10.6
9.7
10.9

Eric

simplyconnected
05-08-2017, 01:43 PM
Reporting my fuel mileage, hoping to compare what others are experiencing. 93 Octane E10 gas. Running average over the last 788 miles:

10.6
11.8
11.5
11.6
11.1

??? Those are EFI numbers? I would expect at least 1/3 more efficiency.
Eric's numbers are more typical for a carbureted engine. - Dave

Deanj
05-08-2017, 03:52 PM
Maybe Yadkin has a lead foot.

I get 10MPG with a re-built 352 (357) .0030 over, with a Cruise-O-Matic and 310 rear end running 92-93 octane.

Dean

scumdog
05-08-2017, 04:33 PM
17mpg from the 390 in my '66 Town Landau that had 4 occupants and a heap of luggage on a recent trip.

But that is using Imperial gallons - "your result may differ"!

Before the carb rebuild and fitting a new functional vacuum advance I would get 13mpg.

Dan Leavens
05-09-2017, 09:36 AM
To chime in on the mileage, I have kept a log ( for my benefit ) for the last 10 years as follows:

58 HT 352 15 mpg Holley
60 HT 352 17 mpg Carter