Hole in rear end

7173Mustangs.com

Help Support 7173Mustangs.com:

Joined
Sep 30, 2010
Messages
6,016
Reaction score
945
Location
Mustang, OK.
My Car
1972 Mach 1 Q code
2007 GT
1969 Cougar Eliminator B302
CSX 7000 Shelby Cobra FIA
2020 Edge ST
2002 F250 V10
Perhaps a very early (57-59, I think) carrier was used at one time, they didn't have fill plug on the carrier. Do you have a fill plug on the carrier? Chuck
 
Joined
Feb 17, 2023
Messages
55
Reaction score
9
Location
Virginia
My Car
73 Mach 1
351C Q car
C6 trans
Perhaps a very early (57-59, I think) carrier was used at one time, they didn't have fill plug on the carrier. Do you have a fill plug on the carrier? Chuck
There is a fill hole. The bolt in this hole doesn't even fit tight. Going to weld it shut. Lot's of things on this car makes me scratch my head.
 
Joined
Apr 24, 2020
Messages
1,040
Reaction score
1,002
Location
Pittsford, NY
My Car
My all time favorite vehicle is our 1969 Shelby GT500
Do you have a vent hole, preferably with a cover? If not, especially if the plug is not tight fitting and located near the top of the housing, it could have been providing venting for then the interior of the axle housing, oil, bearings, and gears, warmed up.
 

pmdorsett

Member
Joined
Feb 18, 2022
Messages
9
Reaction score
8
My Car
1972 Grande, 351c 2bbl, automatic
Any idea why someone would drill a hole in the rear end???
more than likely to fill the rear end, some earlier cases didn't have fill plugs and the fill hole was in the housing. That isn't even a plug it looks more like a ring gear or flywheel bolt. make sure your carrier has a fill plug before welding this or you won't be able to add oil.
 
Joined
Feb 17, 2023
Messages
55
Reaction score
9
Location
Virginia
My Car
73 Mach 1
351C Q car
C6 trans
more than likely to fill the rear end, some earlier cases didn't have fill plugs and the fill hole was in the housing. That isn't even a plug it looks more like a ring gear or flywheel bolt. make sure your carrier has a fill plug before welding this or you won't be able to add oil.
It's just a bolt. A fairly long one at that. It does have a fill hole. I plan on breaking it all down and checking everything. That's when I will weld it shut.
 
Top