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Old 01-21-2019, 12:43 PM
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patrickt patrickt is offline
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
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I have a 428, stroked and bored to 447, with a healthy SFT cam. Not huge, by any means, it's 245/245 at .050", and I always get 8mpg in normal driving, which is about half and half highway and city. When I took her on a long highway trip, I got 12mpg cruising at about 70mph. Now, with my .64OD and 3.54 rear, that means I was turning about 2200rpm. And those numbers have been consistent for over a decade.
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