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  #1  
Old 03-24-2008, 02:33 PM
andy2175m4 andy2175m4 is offline
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Default head gaskets leaking a lot of oil onto the floor

I have 1963 with a stock 390, with 155k miles, previous owner told me engine was rebuilt at about 100k miles.

Car runs fine, does not overheat, blows no smoke, burns very little oil,
There is no oil in the radiator, there is no mystery disappearace of coolant (like my chev and cadillac always did) and there is no coolant in the oil pan, so the I don't think the water jacket in breached.

BUT.... there are a lot of oil leaks from the engine. I checked with a mirror and lamp and found the passenger side cylinder head appeared to be leaking a lot of oil from the head gasket/block interface.
Why would the head gasket surface be leaking so much oil ?

It really dribbles. Two 6" dia puddles every time I park the car after a drive. Looks like leaks from both heads, thanks for your advice

Andy
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  #2  
Old 03-24-2008, 05:17 PM
Petrolhead Petrolhead is offline
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Hi there

I my opinion it's possible that your rocker cover gaskets might be leaking oil down the side of the heads/block. When this happens the oil can gather on the join/gasket between head and block, so it looks like the head gasket is leaking, when it isn't.

It's unlikely that the head gaskets are leaking that much oil, so it might pay to check the rocker gaskets first - they can dribble out quite a bit of oil.

Alistair
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  #3  
Old 03-24-2008, 06:23 PM
bcomo bcomo is offline
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That's right.

I've even seen oil from the rear of the valve cover gasket drip down the back of the bell housing making it look like a bad rear main seal.
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1960 Hard Top/430
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  #4  
Old 03-24-2008, 07:39 PM
tbirds8 tbirds8 is offline
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It's either from the vavle covers or the back of manifold. The FE motor was great for that manifold leak. Not a real good design were it meets the block. And will leak like you describe.
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  #5  
Old 03-26-2008, 11:05 AM
Hawkrod Hawkrod is offline
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Quote:
Originally Posted by tbirds8 View Post
It's either from the vavle covers or the back of manifold. The FE motor was great for that manifold leak. Not a real good design were it meets the block. And will leak like you describe.

That is where I would put my money. Rear intake leaks are not fun and the oil runs accross the head parting line and drips from the corner. Valve covers can do it but manifolds always do it! Hawkrod
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