geeteeohguy

Thanks, folks. Yeah, we've become spoiled with lock-up converters and overdrives. The 200R4 and 700R4 seem to be the swap of choice, provided you run a fairly stock engine. My 3.36 '67 feels like it needs another gear out on the open road. But in the '60's, gas mileage wasn't a concern. Linda, yes, the axle code is stamped on the rear end. On your car, it will be a two letter stamp, on the right side axle tube, facing the rear. the codes begin with a W for standard, open diffs, and a Y for safety-trac (posi) units. Yours should be a WG or a YG for 3.36 if it's the standard ratio. They run WB/YB=2.56, WC/YC=2.78, WD/YD=2.93, WF/YF=3.23, WG/YG=3.36, WH/YH=3.55, WE/YE=3.08, and WK/YK for the 3.90 ratio. The only way to tell if the gears were changed is to remove the rear cover and look at the numbers on the gears denoting the amount of teeth, or counting the teeth on the ring and the pinion. I have those numbers also, if you need them. I think in today's day and age, with the amount of torque and power an Poncho engine has, short gears like the 3.90, etc. are not needed for most drivers. Those gears are better left to high revving, low torque, hi horsepower small block engines. Good luck in your hunt. To me, that's the fun of this hobby!
Jeff