i have a 89 f150 and i pulled the 4.9l and 4 speed manual trans out of it, i put in a older 5.8l motor with a c6 tranny. now my question is since i changed from a manual to an auto it is doggish. and i was wondering if anyone could tell me what the rear gear ratio is on a stock 89 f150 with a 4.9l manual. or tell me what the numbers mean on the tag of the rear end.

 

It could be anything from a 3.08 to a 4.10 or higher.

I'd be willing to bet the rear is between 3.08 and 3.55, leaning more toward 3.08.

Pull the #'s from the rear and post. Also look on the Drivers door and get the Rear code from there...

 

well i found out i have 3.08 gears so that is why i have no powere off the get go so i guesess i change tires or change gears. but thanks for helping me know where to look.