got the ol 8.8 axle in my 90 F1 just wondering if there any good any problems out of them...just curious

 

They're good. Change the fluid.

 

They have been around for what, 28 years or so.
I guess the are well suited for the smaller truck application.

The stock limited slip clutch packs wore out quickly, at least there
are many traction adding diffs these days and a variety of gear ratios.

Later 8.8s benefitted from discs though.

 

anything thats already in there "would be good til it broke". 8.8's are stout for light app's.

 

The 8.8 is more than beefy enough for a stock or lightly modified truck with relatively stock sized tires.. 33" or less, but throw in a hairy stroker and/or big meats and it'll begin to show it weaknesses... which should not be all that surprising. Everybody thinks the 9" is the ultimate solution but the reality is the 9 is no better unless it has upgraded axles, and those are available for the 8.8 as well at about the same price. There are guys that have broken this axle but it usually takes torque loads from big tires and motors well beyond what it was designed for, compared to what the competition was putting under thier trucks from the same era this axle is nearly bulletproof.

 

And considering that the new 2011 Mustang GT uses the same 8.8/31spline rear end and the GT has a 5.0 with factory underrated 412horsepower/390ftlb of torque and does 12 second quarter miles--it must be a strong axle.

And the 2011 GT500 Mustang has a 5.4 supercharged 550 factory rated horsepower engine that uses the 8.8/31spline axle !

 

Im with every one , you can make the 8.8 as strong as you wan't , theres alot of after market parts for them , you can stuff what ever you wan't in them....

 

ten four guys thanks for the replys, i was just curious how the 8.8s were.

 

I.M.O. sticking a lot of $$ into an 8.8 is a waste. Why not use that $$ on a 9" with the 31 spline and Tuu lock posi gearing. Bolt on 11" brakes as well.

 

How is it a waste when the OP buying a 9" wouldn't be any more beneficial than keeping the 8.8? He'd have the cost of the 9" plus have to upgrade it also. The 9" axle is not magic.

 

8.8 also installed in 1983/89 F250 "Light Duty's."

 

yea the 8.8 blows the other lil toothpick running gears out the water. the only thing that will really break it is a ton of power, enormous tires, bad luck, or repeated exposures to idiocy. if theres one thing ford is known for, its usin beefy drivetrain components.

 

i am on 8.8 #3 theres stories behind each of the 1st 2 failures. 13 i have had my truck since 60k , i bought it lifted, it was running 33x12.50x15 's with the stock 355 gearing. at 110k i was driving down a il 53 felt a wobble. i didnt make it home,,, i sheared the lock pin on the spider gear shaft and it was walking, by the time, i got it somewhere off the highway, it spit the pin out the cover. destroying everything inside. failure #2 at this point, i had rebuilt it with all stock stuff, and was running 35's, the stock type carrier snapped at the bearing mounts. again destroying everything inside. where i am at now. when the 2nd one broke. i wasnt going stock. i now have a aburn pro series race carrier, (cone type) girdle, and 3.73 , never had another issue, the only thing i have done, is gear changes. its doing just fine and i have almost another 100 k on this setup

 

The lock pin shearing off is a typical problem with the 8.8 (and the 7.5 used in Passenger Cars). The lock pin the same.

From memory (not a good sign in this case!): D8BZ-4241-A .. Lock Pin.

Lotsa luck getting the remains of the pin oughtta the shaft, so...be prepared to buy a new shaft as well.

 

you are correct sir!