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 Post subject: Differential Fluid
PostPosted: Fri Feb 22, 2013 12:15 pm 
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Turbo EFI
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Joined: Fri Dec 30, 2005 2:49 pm
Posts: 1158
Location: Houston, TX
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Possibly a dumb question, but all my search-fu yielded no relevant results. What is the recommended fluid to put in a 7.25" rear end? I will be "road racing," if it matters. You can basically read that as "I will be driving to work really hard through the city for hours at a time."

Also, recommendations for housing cover gaskets? Anything special out there? Mine shows signs of leaking.

I don't know my gear ratio, but it's likely high 2s-low 3s.

_________________
Somehow I ended up owning three 1964 slant six A-bodies. I race one of them.
Escape Velocity Racing


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 Post subject: What rear axle?
PostPosted: Fri Feb 22, 2013 1:05 pm 
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Board Sponsor
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Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9714
Location: Salem, OR
Car Model:
Depends on the axle type for gaskets (only a couple brands offered at all for the 7 1/4"), 8 1/4" and 8 3/4" are very available.

If you have a performance differential, follow the instructions on lube for the diff type (trac lock, ARB, etc...). I haven't had any problems using an over the counter gear oil with a stock mopar rear even with stock sure-grip.

-D.Idiot


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 Post subject:
PostPosted: Fri Feb 22, 2013 5:31 pm 
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TBI Slant 6

Joined: Sat Mar 06, 2010 6:21 pm
Posts: 122
Location: Lockport New York
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RTV silicone gasket maker would be fine for a rear axle cover, if you can't find a gasket readily, 80-90 gear oil should be fine, 85-120 would be better in hot weather, if it's a posi make sure oil is compateable with a limited slip axle, most brands will say on the bottle


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