Any ideas? The new AMC six seems most happy (max. mileage etc) at 2500 rpm, but it's oversquare, so I assume the old undersquare (long stroke) six would be happiest somewhat less than that. 2200rpm at 65mph? The factory setup (tires, gears) for a twin-stick powerpak 63 American puts it at 2250 rpm for 65mph (year 2007) which I hazard a guess meant 60mph at 2000 might be the olde tyme design cruise spot (it was a long time ago). My issue is merely tire sizes. There's few left available anything even close to factory, and the metric equiv. of factory tire sizes are simply unavailable. 195/70-R15's seem to the the smallest practical size. It's a dilemma between stock, and the rally/rod look which wants low(er) and wide(r), but those would throw off the overall ratio, which on this car, with little power margin, and inability to rev, matters. _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list