Hey all-

We have a 1987 F350 with the 7.5L 460 v8 and 4 speed manual, 2WD. It has dual rear wheels however. It did not come with a limited slip differential and I was wondering if anyone knew what rearend was in it and where to get a limited slip carrier and gear set. We use it on the farm and it would be neat to think about using it in the snow/mud without having the tractor on standby.

Thanks,
Andrew

 

Since you said you use it on a farm, and if most roads are not paved you could do it the extreme cheapo way and weld together the spider gears and make it a locker. Very cheap and effecive, 4x4 guys have been doing this for years but HIGHLY not recommended if you drive on paved roads.

Your axle tho is likely a sterling 10.25 could be full float or semi float axles. https://www.ford-trucks.com/forums/8...-question.html

 

Since he has duals, its almost definitely a full floating axle, a quick look at it will tell you

 

Could be wrong but I thought the DRWs were D80 axles. A look at the axle code on the door sticker should confirm either way.

 

For dually, i wouldnt even bother with a clutch limited slip. The extra tires get so much more bite, all it will do is slip. Get a locker or a gear limited slip

 

x2....A buddy of mine has a 3500 Series Chebby with a Detroit Locker....Pulls like a ****....454 w/ auto....

-Wes

P.S-The 454 seems a smidge underpowered for what it is....Seems to me like it should have some more ooph...

 

What am I looking for on the door sticker?

Didn't the factory offer limited slip as an option in 87?

We use the truck to pull a cattle trailer with cattle in it to auction and the truck has a dump bed added to it...

Our main problem is mud and snow so I don't know if the duals will have enough bite to spin the clutches in this particular case?

I bet that 454 pulls better than this anemic emission bogged 460!

Thanks,

Andrew

 

It will say "Axle"...There will be a #, 18, 19,etc....Some have H19, etc....

And it did ok....Was still anemic....lol he bought it for $1,600.....and it was a 95'....