"a 289 or 302 can't do better than 11-12 MPG. Is it because Fords are
gas hogs?"
They can do better than that and they can be gas hogs.
How is the cam set-up? Lift, dwell, LCA, was it installed straight up
or rotated a bit? What heads are on the beast? manifold? exhaust
manifold/headers? system? How about ignition? Plugs? Timing? Vac
leaks? Carb? Had it dyno'd? How many lbs/hp across the rpm range?
Some 2 bbl carbs are much bigger than the front two of a 4 bbl. Is
that the case? My Holley 650 is pretty small on the front two barrels.
Gear ratio? Tire size? weight?
Get it on a dyno (with the engine instrumented) and give us the numbers.
Regards,
Jim
B9470139
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