main seal

[1966FLEETSIDE]

my 327 is leaking oil,how do i find out if its leaking from main seal.and if so,how dificult is it to replace it?

[Rufton]

I guess the first step is making sure it's not valve cover, intake or tranny.
There is a chance ( I'm guessing 1 in a 1000 chance) a high mileage oil w/ seal conditioner or just seal conditioner will help unless the seal has hardened too much.
A 2 piece procedure is dropping pan then rotating upper half out by pushing w/ something like a chop stick. Then rotate new one in.

[1966FLEETSIDE]

thx rufton.well i did change valve cover gaskets and tranny,how do i know if its main or just oil pan.

[Rufton]

Originally Posted by 1966FLEETSIDE

thx rufton.well i did change valve cover gaskets and tranny,how do i know if its main or just oil pan.

That's a good question but have to drop pan either way. Seal leak may sling oil inside bell; pan may not.

Can snug pan bolts just don't bend it; slight chance that will help.

[donthekawguy]

Mine is leaking like crazy also. I'm just waiting till I'm motivated enough to fix it. lol

[Tx Firefighter]

The first step to fixing any oil leak is to get the engine clean. Real clean. Then get under it and look for where its coming from. You can't diagnose anything with oil all over it.
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[brokenspoke]

The rear of intake manifold or oil pressure line would be my first check

[1966FLEETSIDE]

thanks to all of you for the great tips.