You'll see an o/d with 2.x gears is just too low. You don't want to be under 2000rpm at 60 IMO. Too low of an rpm, even on a tiny cammed engine can drop it below it's power band too far and cost you fuel mileage. IIRC, for cruise rpm, ideally you want to be 100-200 rpm below your torq peak for best mileage.
What about a wideband o2 so you can actually tune the thing to get a nice lean a/f ratio? And a exhaust gas temp gauge to tune your ignition timing to optimal? Yeah where do you stop, lol.
I wonder if a roller teen would be better for mileage. A roller is easier to spin over so I could see it helping. However I did change to a roller in my 87 daytona and noticed no difference in mileage at all, although the roller was more aggressive of a grind than the stock cam.
