Aerostar Differentials
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Posting Guru
Joined: Aug 2002
Posts: 1,041
Likes: 1
From: Orland USA
Aerostar Differentials
Thought this might Help some of you in Aerostar-Land. Found while Crusin'
the web.......JaY
Check this chart before ordering a differential:
-----------7.5-------------------
-----------8.8-------------------
the web.......JaY
Check this chart before ordering a differential:
-----------7.5-------------------
-----------8.8-------------------
Senior User
Joined: Feb 2004
Posts: 389
Likes: 0
From: Rochester, NY
Ford hasn't ever used a gasket (at least within the past few decades) on axle covers. They prefer a grey-colored silicon sealant, which they use everywhere it seems. I'm not sure what it is, but its tougher to scrape off then Permatex...
That chart is useful, though, for visually picking out a 7.5" from an 8.8" axle, or otherwise trying to ID them. Note that the 8.8" has a square cover with round corners, whereas the 7.5" is only flat on the top and bottom, and full-rounded on the sides. Helpful to someone looking for an upgrade or possibly someone that wants to figure out what their van has so they can purchase appropriate parts...
That chart is useful, though, for visually picking out a 7.5" from an 8.8" axle, or otherwise trying to ID them. Note that the 8.8" has a square cover with round corners, whereas the 7.5" is only flat on the top and bottom, and full-rounded on the sides. Helpful to someone looking for an upgrade or possibly someone that wants to figure out what their van has so they can purchase appropriate parts...
Lead Driver
Joined: Sep 2003
Posts: 7,012
Likes: 204
From: SoCal
The 9" diff from my 1969 Mustang had a gasket, so I installed one when I closed it back up.
The grey RTV sealant from Permatex says it provides more structural strength than "regular" RTV. It definitely sets up harder than the regular stuff.
The grey RTV sealant from Permatex says it provides more structural strength than "regular" RTV. It definitely sets up harder than the regular stuff.
