i have an 8.8 in my 84 f150. im lookin to get lockers, either just get lockers in the 8.8 or i see alot of 9" with lockers on craigslist. if i do a 9". will i have to change anything else? bolt right up? and will it be better then the 8.8?

 

The 8.8 and the 9 inch are both good rearends. They got away from the 9 inch because of fuel mileage, the 8.8 is more efficient.

Either rearend should bolt in if it comes from a 80 thru 96 f150. The 9 inch will be found in the earlier models. Double check the length of the nose on the different rearends, you may need a longer or shorter driveshaft if you change from the 8.8 to the 9.

 

You mention "Locker"...do you mean a detroit locker or a traction loc??

I've had a Detroit Locker before and personnally would not do it again for any street application. For straight line racing they're great.

 

If you get a Detroit Locker,make sure you upgrade to Alloy axles.I snapped an OEM axle shortly after installing a Detroit Locker in a 9 inch.Dutchman Axles makes a strong inexpensive alloy 9 inch axle.

 

I would have to agree with 82f100460, a locker for every day driving isn't the way to go. Unless of course it is a selectable locker, either air or electric. A good limited slip would be a better choice.

 

let me back up a little bit. id like to get slectable lockers so that i can leave them unlocked while on pavement and lock them when its needed. ive heard about the eaton e lockers, air locker, and limited slip but those sound a bit expensive. i dont know which one is the best and which is cheapiest.

 

Well none of the selectable lockers are "cheap" IMO. Any one of them are going to cost $700+ not including installation so add another $250 or so. Then if you decide on the air locker you'll also need some kind of air supply to operate it. So all included your looking at $1000+ easy. The electric would be about the same minus the air supply but, they have kind of a reputation of not being that good, don't know because never owned one. But Jeep and Toyota both use electric lockers so maybe they got them working better.

 

Ok. Thank you all.