fast64ranchero

Look at your Window sticker that was on the car when you bought it, if it has no mention of gears then you have 3.31, if it has other then 3.31 to 1 it will say on the sticker, or climb under it and read the tag on the rear end. 10 have three choices 3.31, 3.55 and 3.73's with 3.31 as the "base"