30 mph per 1000 rpm is typical for 2.53:1 differentials and 1:1 transmission ratio. Ken Quoting Tom Jennings <tomj@xxxxxxx>: > > > Using your numbers, 2250 > > for 65mph makes it 22.9 mph/1000 rpm which is about where my 1980 Spirit > is > > geared at including taking into account the size of the rear tires > > (P245R60-14). > > OK I made my spreadsheets calc MPH per 1000 rpm in top gear (all three top > gears for this car:-) > > 3rd straight up 20.3 mph/1000 > 3rd OD 29.0 > 2nd OD 17.8 > > > Actually the Spirit and the AMX are taller at about 33 mph/1000 rpm > > That is very tall gearing. > > Oh yeah. > > _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list