" From: farna@xxxxxxx " " Tom, I posted the gear ratios as used in late model Jeep Cherokees with " the same engine. The AX-5 and AX-15 have different gearing than the T-5 " used in AMC cars. I'm not sure what the first gear ratio is in the AX-5 " and AX-15 off the top of my head, but they are indeed used with 4.10 " gears in 2.5L Jeep Cherokees. So Jim and I are neither wrong nor " incorrect -- neither are you. Just talking about different " transmissions in different vehicles. The question was on using the Jeep " combo in a car, not running the Jeep engine with a car T-5. i've just been doing some spadework in this area. 1st gear ratios -- ax5 3.93:1 ax15 3.83:1 t5 4.02:1 all about the same. also btw cams are more influential than anything on what rpm you get best mileage at. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought