Thread: fuel mileage
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Old 04-19-2014, 08:04 AM
COBRAMAN 484 COBRAMAN 484 is offline
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Join Date: Jan 2001
Location: Lynn MA. USA,
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I have had four different motors in the last 20 years that have ranged from a 428 to my current 484. I have run single quad, duel quad, and have been running an older hatech f9a efi unit with 50mm TWMS for the last 10 or 12 years I have averaged 10 mpg on all of them. The only exception was when I ran a tremec TKO with a.64 5th gear for a while. I got about 12-13mpg on highway driving. I got rid of the TKO and went back to the big in and out 4speed because of the low gearing in the tremec.
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