9" Ford Question - Third Member Install
I am assembling my 9" axle for the 67 project, and had a question about the 3rd member install. This is a new axle housing and differential from John's Nine Inch Factory, so it's got zero miles on it and has not been together yet. The question I have is whether to use any RTV sealer when I drop in the differential. I have a Fel-Pro gasket and it fits very snugly over the lugs on the differential housing. I called John's tech support and they said if the gasket fits tightly over the lugs, I should be good without any RTV.
I'd rather not use any RTV if I can avoid that smeary mess of a product. However, I also don't want to have a brand new axle that drips 80/90 on the driveway.
What say you, axle experts? Also, is there a magic gasket better than fel-pro that will seal 100% without any RTV?
1967 Mustang Restomod Coupe