Has anyone heard of somebody bolting on a 10.25 were our 9"s are.

I've heard some newish 250s doing it but is it possible for a f150 or a F100 to do it.

I know of the larger ubolts (wider) and I was wondering about the shock placement really. And I've read I might have to get my drive shaft shortened a couple inches.

I'm 20 and it's more of a fun truck I drive around. I am looking for 4.10s or maybe even higher in it.

 

The biggest issue is the bolt pattern. Unless you want to run 8 lug wheels on the back and 5 lug in the front you've got quite a bit of work to do to convert one end or the other so they take the same.

I'm not sure about shock mounts, but those are simple to make out of some scrap steel with a welder (if you don't have a welder I'm sure there's a shop near you that can do it cheap).

Shortening a driveshaft is about $100 - $150 at a driveshaft shop. In addition to shortening it you'll probably (I'm not sure about this) need to do something to convert the (probably) smaller U-joint yoke in the half-ton driveshaft to the (probably) larger one on the 1 ton axle.

Bottom line is if you have a need for a 1 ton axle it's very doable. But if you just are looking to change gear ratios, stick with the 8.8" or 9", whichever you currently have.

 

Can I find a 8.8 with 4.10s or 4.56s.

 

A while back I swapped pumpkins to go from a 3.00 to a 3.50 cause it was free and now that I've upgraded my heads and intake I've been thinking about some more gear.

 

I would t care if I had the 8 lug in the back either. But I found a site that the 9" were stock 2.50:1 trough 4.56:1 so I just need to find out what vehicles came with a 4.56 in them

 

You will have to install the gears in your truck rearend. The mustang guys do it all the time and you might be able to find out if one of their setups will fit inside your rearend. You may be able to go cheap that way with a used set from a mustang. Or just buy new gears from Summit or Jegs.

 

Don't ever get rid of Ford 9"! They are the best!
truss the axle if you need it do do heavy duty **** but itll handle all a sterling can and then some plus you can get good and swap gears in less then a hour. Let's talk drag racing here. You can go to a track and be like **** he beat me off the line but I kept the same distance, let me just go from 3.55 to 4.10 and then you'll probably beat him. Cars use the Ford 9" for everything. My neighbor has one in his 67 camaro drag car. Trust me. Don't ditch it for gears.

 

Ther is absolutely ZERO need to put a 10.25 into a F100 with a 3.8v6

If anything it will HURT you. All the parts are much bigger and heavier and take more power to move.

if you want lower gears find a center chunk form a 9" with 4.10 or just have your regeard

 

I agree with what Diesel_Brad said. 9" pumpkin chunks are easy to find on ebay used and they are cheap. I am awaiting one that comes with the same factory ring and pinion gear mine has as I planned on having it gutted and put a Detroit TruTrak in it reusing the factory gears so I can just swap it out. That way if I do not like how the truck drives with it I can always put the original back in without having to have the ring and pinion reset.

 

You can get pretty much any ratio for a 9" you want, aftermarket stuff runs 3.00-6.50. Since it is a very popular racing axle, you can find many, many takeout chunks on e-bay for very reasonable prices with just about every ratio under the sun in them.

 

Brad diesel you didn't read my intire signature.

I have a 302 with a e303 cam (PO) gt-40 heads. Low rise intake (lower horsepower band) and a 1406 Edie with an overdrive gear ratio of .69 it can handle 4.56 just fine. But I'll do 4.10 or 4.56. I don't really care about mpg with this truck and never have I bought it to fix up and have fun.

I don't want to put in the gear myself or have a shop do it I really just want to find a pumkin out of a JY bronco or something. I did some research and it looks like the early 62-72 f100s had 4.10 and really any bronco year just might have one. The reason why I asked about the sterling is because I thought maybe it would have a higher gear ratios stock wise.

But I just need to find some broncos out in a yard.

 

0k. 302 big deal. a 9" will take anything that engine can throw at it. there is a reason NASCAR uses 9" in ALL the cars on the track(including chevy and dodge)

 

So you see the reason why I'm asking about the 10.25

 

No, not at all. That is a hell of a lot of work and cost for 4.10s

 

If I can't find a 9 inch around here with the gears I want but find a 10.25 is it possible to put that In relatively easy.