Tony D Posted May 2, 2005 Share Posted May 2, 2005 Ill play parrot here, and squawk the same numbers: Roundtop SU's on the 260, around 22 in city driving, and anywhere from 19 to 28mpg on the freeway (depending on average speed, 19mpg was averaging almost 110mph from Oglalla to Grand Rapids on I80!) on my 240, with L28, similar, 20 city, and around 25 freeway. On a 240Z with a late five speed, and the 3.36, it was close to 30+mpg when driving steady state, and almost always above 23mpg in town. My bud with Dual DGV's never seemed to go nearly as far as I did without filling up, so his mileage was considerably less as he was "The King of E" and would go till the thing was almost on fumes, and I always was well above "E" when se stopped for fuel... Ahhh, the ribbing that occurred then... I have seen an L24 with 3.90 gears and a four speed turn in 28mpg on a trip from Phoenix to LA at 65mph steady, so multiple carburetion is not bad for fuel mileage... it's all in the tuning I suppose... I would mention that with my old blowthrough 44PHH's and a turbo system on it, I got 17mpg in combined driving, while at the track I could get as low as 5mpg! So driving style does come into play. Quote Link to comment Share on other sites More sharing options...
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