Hope I worked it out right, converting all those figures, I get 5.3kms per litre, dividing 5.3 by 1.6 = 3.33. Litres to gallon = 3.784, so I am right in 3.33 X 3.783 = 12.59, my brain has gone to mush.
My first Cougar was a 72 Standard, waaaaay back in 1976. I was more concerned with it getting me back and forth to Ohio State than anything else, so it stayed bone stock -- 351C-2V. With the 2.75 or 3.00 rear gears it had, I was getting somewhere near 18.5mpg on the highway. I didn't think that was all that good since we had a bunch of full size GMs (Olds Delta Customs) with 455s that got about the same mileage or better. I was never able to get the darned thing tuned up properly until just before I sold it. Oh, then it would light up the right rear tire .
AlphaCat only got about 12mpg, but that was when it was still the old tired engine. I don't know what it will get now....
BetaCat was good for around 16mpg with the 3.25 gears, but that dropped to 14 with the 3.70s.
P.S. When I get AlphaCat back on the road I think the more appropriate term I'll be concerned about is not miles per gallon but miles per set of rear tires. I have 18 years of pent up LFD that I need to get rid of! Muahahahaha
i get one tank before i have to fill up again. then i use that tank and fill once again. milage whats that? If i figured out what all my v8s used in gas i would probably go nuts best just to do as i said tanks low fill and forget.
I Have a 429 PI witha C6 and don’t get much gas milages but plenty of fun: I went on vacation to my neighbourhood country Finland this summer , it´s a trip for about 200 miles and i got about 10-12 miles per gallon:1zhelp:
69 351w with 2.75 rear, 4spd, 600 CFM with no lead footing 15 mpg commuting, 22mpg constant @ 70mph. It got 8-9 mpg with 3.90 gears. It is running a little lean but gets better mpg than 66 289 did in past.
The engine is fresh, carb rebuilt as well as distributer. I don't think it could do much better.
Why does everyone call them "secondaries"? Mine are ALL primary - primarily open... after the staging lights, of course! :ylsup:
Incidentally, this is the second most visible symptom of full-blown LFD, first being bald passenger side tire...unless you're lucky enough to have a Locker.... hey, maybe my bad passenger side axle seal is related to my bald passenger side tire.....