oil leak

[Challenger1970]

I've got a late 70's 360 in a 72 challenger. My problem is an oil leak(well maybe 2).The first leak I know about is the oil pan,cheap chrome oil pan leaking from the valleys.The other leak(s) I don't know,but the mess it makes is killing me.If I do a fairly short city drive(about 1\2 hour)almost no mess (just a little seapage through my cap style breather).If I do a hwy cruise, when I get where I am going the engine bay is sprayed with oil.I figure it might be leaking and being blown by the fan.The closest point to the fan I see oil is on the timing chain cover,the oil tends to be mostly spayed top to bottom passenger side and top firewall driver side.I thought the intake could be the culprit,but I resealed and no change.new valve cover gaskets no change. Could my mess be caused by the oil pan leak???also about the breather seapage, I was told too much crank case pressure could be the cause,I ran a pcv valve and no change.My oil pressure at startup is about 65psi,when runnig before operating temp70-75psi, when running warmed up 45-50psi and when idling (550-600rpm)while warm10-15psi. I've been told my oil pump is a high flow low pressure,10-15psi at idle is fine???(been that way for two years never heard a knock or anything).hope this is enough info,thankyou for any help.

[ntstlgl1970]

do you have a picture? To show the area that is most oil soaked?

[moper]

When your car is sitting idling, take out the breather....there should be some visible vapor coming up and out the hole. If it's excessive, you may have crank case issues. but.. what kind of breather/filter is it?

[Chryco Psycho]

check for a leak at the oil pressure sender at the rear of the block , also check for leaks at the valve covers if you have cast alum covers , could be front crank seal , or the corners of the intake manifold as well

[Oldschool]

Not sure which valve covers you are running, but if they don't have the baffles under the breathers, they will sometimes leak.  If they HAD baffles but jave been removed for some reason, same deal.  When you get on it and the rpms rise, the oil is flying everywhere under those valve covers.  No baffles means it can also fling it out through the breathers.  No external fix I am aware of.  Either replace the valve covers with baffled ones or clean off the oil.  BTW---a LOT of Hemis run unbaffled valve covers and they leak when you play with the GO peddle.  I just wipe it off and keep playing.......