8.25" weak points
#2761158
04/07/20 03:58 PM
04/07/20 03:58 PM
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Joined: Feb 2020
Posts: 19 Winnipeg, Manitoba, Canada
'70Satellite
OP
member
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OP
member
Joined: Feb 2020
Posts: 19
Winnipeg, Manitoba, Canada
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So what are the weak points of the corporate axle? To be clear, I still run one if these in my B Body. It has a 3.55 Yukon geared Dura Grip posi in it. I will continue to run it after the 440 is put in. Will I blow it up? Sure. Maybe. At some point. I'm not doing hard launches. It's not a 4 speed car. It's a cruiser. But, eventually, it's on the list to upgrade. For right now, what is the weak point of this diff? I've read countless posts of guys drag racing these, I guess because they are light weight, and not snapping them every run. Some running them for years. So if the unit has a weak spot, what is it and what can be done about it, aside from replacing it with a 8.75" or Dana? Just trying to keep my mind going while sitting at home. Stupid plague.
Last edited by '70Satellite; 04/07/20 04:00 PM.
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Re: 8.25" weak points
[Re: mopars4ever]
#2761173
04/07/20 04:35 PM
04/07/20 04:35 PM
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Joined: Jan 2003
Posts: 3,122 Auburn WA
Dave_J
master
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master
Joined: Jan 2003
Posts: 3,122
Auburn WA
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The 8 1/4 is the same size carrier as the 8 3/8's in 1,000's of pickups and vans. They are stout enough for most low level hot rodding. So is the 7 1/4 within reason.
My buddy cracked a spider gear on his 8 3/8's but he was stupid doing burn outs by backing up and slamming it into drive or around corners all the time. .
Retired, US ARMY 1973-1994 ASE mechanic, Electrical 1994-1997 Retired GTE/VERIZON/FRONTIER 1997-2015
Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.
03 Suzuki Burgman 650(Burger King) Scooter 65 Formula S Cuda 78 Little Red Express Truck 98 Buick Regal (wifes car)
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Re: 8.25" weak points
[Re: Sniper]
#2761245
04/07/20 08:05 PM
04/07/20 08:05 PM
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Joined: Feb 2020
Posts: 19 Winnipeg, Manitoba, Canada
'70Satellite
OP
member
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OP
member
Joined: Feb 2020
Posts: 19
Winnipeg, Manitoba, Canada
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Well thanks all. That does make me feel better about the situation. Unfortunately, like a lot of other things, my budget for this car, specifically the 440 swap, is feeling the pinch of no work right now because of the current pandemic. The engine should be done by May 1st, but there's the tranny to do, the drive shaft, the cooling system, and whatever else I can't think of right now that just adds to the cost of a swap. But at least knowing that with good quality parts in my 8.25", and some common sense driving, I should be able to hold off on the rear end upgrade for a season or two of taking the wife for ice cream on a Sunday afternoon. Since it was brought up, I am running 255's(BFGTA's). Not that big or sticky. Also, hard acceleration on corners in this big girl isn't really something I'm comfortable with, lol.
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