Recent content by john-9

there are 2 kits available for the 8-3/4 clutch style sure grip mopar performance P4529484 which is more aggressive lock up and the Spicer kit 22233X which is less aggressive lock up stack for the Mopar kit is with your clutch hub splines up -- flat tabbed plate , flat disc , tabbed curved...

you need to move the drive pattern up on the gear , you have too much toe ( towards inner part of tooth ) in the pattern so you have to subtract from the shim thickness , take out .003 from the pinion shim thickness and try again and keep doing that until you arrive at a proper pattern. you will...

i use Timken 7216 or SKF 18912 or Rat 6103 from Summit racing all these are rubber seals for the 742 case ,, which seal did you order ,, the sleeve is hammered on over the yoke surface using the install tool supplied ,, if you need more info go to the speedi-sleeve website and it will show...

when you do find these antique leather seals and you want to use them , you are supposed to soak them in the oil used in the application e.g. rear axle fluid for differential seals and engine oil for rear main side seals or timing cover seals before installing the seal , this allows the leather...

why do you want to change from 2.93 to 2.76 gear , only about 180 rpm's difference ,, really not worth the time or the money to do it.

for a used gear set the pattern is right on ,, should be no issues if you had to run it ,,, but why someone would grind on the pinion that way is beyond any reasonable reason , save the shim under the pinion head bearing for your next set up , add this gear set to your scrap bin.

by chance was the axle overfilled with gear oil ,, had a similar issue with a rebuilt complete 9 inch axle i sold , all seals were leaking , turned out the customer overfilled the the unit ,,, not the 5 pints required. pull the fill plug with the car level to see if any leaks out. if not check...

are you sure the old vent wasn't broken off flush with the housing and the broken threaded part is still in there . thread size for the vents is 7/16-20 i believe.

sent you a PM with my number ,, there is one other way to go since you do not trust a e-bank transfer -- give me a call .

that one is on the shelf ready to go -- for some reason i cannot do a private message ,,so i am going to post an ad on kijiji and you can contact me there.

what gear ratio did you want and which case ,, i have some rebuilt 8-3/4 differentials 3.23 , 3.55 ,, 3.73 ,, 3.91 i am located near Windsor , Ontario and can ship. example in pic.

the early 7.25 axle you have uses pinion bearing preload shims that ranged from 0.074 - 0.106 which are pretty much obsolete now - closest shim pack is for a Dana 44 used in Jeep applications which have an O.D. of 1.450 and an I.D. of 1.140 so you would have to open up the I.D. a bit. this...

your gear pattern is perfect ,, leave it alone ,, every 8.8 i've ever done using Ford factory gears rolls the same type pattern when set up correctly. as long as your pinion bearing preload is correct as well as your carrier bearing preload you are good to go. total width of both carrier...

yes a properly rebuilt differential will have some resistance when turning ,, this is due to the preload on the pinion bearings as well as the preload on the carrier bearings ,, your gear pattern is perfect leave it alone ,, your backlash is on the low side but after you make a few runs it...

do yourself a big favour and pull the differential confirm the gear ratio and whether you have a sure grip or not and have it rebuilt as long as the gear set look good , its a 50 year old part along with the gear lube and axle bearings . clean the inside of the housing and reinstall the new...