225 slant six engine, stock A-904 tranny, 2.76 rear end, stock one barrel Holley carb, stock ignition and coil, timed to 10 degrees BTC. Very stock and original.
Excellent! Thanks.
What size tires?
Do you know how many rpm’s you turn on the Hwy.?
Recurving the distributor and resetting it a little higher can help a bit. Also, ignition is a key source of mileage. You did t mention the year, if it has points are electronic ignition. I like the Chrysler chrome box, but there hard to find. A FBO box is also really good. An overall winner when there right is a MSD unit. There multiple sparks at low rpm’s do help a smidge with more mileage. Open up the plug gaps to about .050.
After these little tricks, (and I’m sure there’s more that others will chime in with...) some of the other items can be a little pricey. They would be be change parts. There is a tiny bit more mileage with a lock up converter trans.
A 904 version is available. It would probably also come with a deeper first gear. That will wake up the “get up and go factor” in first. Then it will act normal until you pop into OD. But that’s pricey and not the end of it since you would have to shorten your driveshaft.
All in all, that’s a serious “Ka-Ching” expenditure with little in return.
I know there has got to be someone here that has a super tuned /6 with cheap tricks for cruiser and his car.
