Not Ranked
Don,
Hook up the odometer and retest it. 42mpg for any V8 is close to impossible. Even the Honda V6 Hybrid claims no more then 35 mpg.
I get in the 17 mpg range for my mild 428 with 3:30 rear and a Tremec TKO. It has a .68:1.00 OD 5th gear. I'm run about 2000 rpm at 65 mph on the highway.
Chuck
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