When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Anybody with knowledge of differentials please help...
I just pulled my pumpkin off my '71, 350 4-spd and saw two small gaps or holes on the underside of the unit. These are on the rear edge of the recessed mounting area for the strut rod bracket:
Are these two small holes normal in the casting or indicitive of a developing problem?
Thanks for any insight...
Paul
Last edited by nwav8tor; Jun 17, 2020 at 02:20 AM.
Might even be damage. I put my rear end together with Permitex Black instead of a gasket. What a mistake. I had to use a big chisel to get the cover off. I put some dings in the outer edges even being careful.
Just casting flaws. If they haven't leaked in the last 49 years I think you're good to go.
Originally Posted by gkull
agree with the above While you have it out drill and tap a drain plug.
Originally Posted by Big2Bird
It's just the back side of the bolt holes.
Originally Posted by gkull
Might even be damage. I put my rear end together with Permitex Black instead of a gasket. What a mistake. I had to use a big chisel to get the cover off. I put some dings in the outer edges even being careful.
Thanks for the replies guys! I can now understand that they're just flaws in the casting that exposed the ends of the bolt holes. After it's all back together and in use I'll keep an eye on it to ensure it's not leaking. I don't think it was when it was a daily driver, but with all the old gunk that was on the unit when I pulled it, it was hard to pinpoint the source(s)...
Differential Vents or Casting Gaps?
While you have it out drill and tap a drain plug. I used black epoxy paint.
