I'll look to see if the gears aren't pitted, but I have a "489" case with 3:23 cone type Sure Grip. It's been sitting in a pail under my workbench for a couple years. If the gears aren't pitted, as that won't do you any good for checking for noise, if they are. You're welcome to it. Lucky for you, you don't need to drive west of TO to come get it, I have my friend from Kingston here, and he can drop it off on his way back Sunday evening.
I won't be able to check until later this evening, on the gears condition.
That would be awesome !! A bit of pitting won't be an issue, because I'm trying to get rid of a certain noise. I'm basically trying to rule out the transmission. Although I have all new bearings and Richmond gears, and the tooth pattern is dead on, I've always had noise on coast and decel.
The pinion seal will likely leak, aside from that, it looks really good, feels tight also. I didn't throw an indicator on it to check backlash. A bit of cleaning, and it's good to go.
Hmmm.. I seem to recall a lot of Dragters using the old 8 3/4 rear end !! Almost as strong as a Ford 9", but way stronger than anything from the "bowtie" corner.
pity there hemi i had two of these awhile ago from that hoard i bought in plainville, scrapped them since they just dodge junk that was no good to me. i have a for 9 inch from a ranchero i would sell you.
I'm I going to have to get into metallurgy and nickel content and odd as opposed to even gear ratio's wear patterns.
If you do the math, you'll find that with your even numbered (ie; 4:10) gears the pinion gear and the ring gear hit the same groove substantially more often then an odd numbered ratio (ie; 3:91) therefore less wear. I won't even get into the higher nickle content and hardness.
You want to toss them, I'll take them.
So what diameter is a 12 Bolt anyway? So if I drill and tap two more holes in the housing, and make it a 14 bolt, is that better?
I'm I going to have to get into metallurgy and nickel content and odd as opposed to even gear ratio's wear patterns. If you do the math, you'll find that with your even numbered (ie; 4:10) gears the pinion gear and the ring gear hit the same groove substantially more often then an odd numbered ratio (ie; 3:91) therefore less wear. I won't even get into the higher nickle content and hardness.
You want to toss them, I'll take them.
So what diameter is a 12 Bolt anyway? So if I drill and tap two more holes in the housing, and make it a 14 bolt, is that better?
You forgot to mention the wheel bearings!! At least the 8 3/4 and Ford 9" use a proper bearing race that is pressed on the axle. What does GM do? Run the bearing right on the axle. I really can't think of a $hittier design.
