I had a problem with my car when i drive long distances with it. I bought the car in Virgina and drove it back to FL on the way home it ate 4 or 5 quorts of oil with no visible leaks. I have had the car for about 6 mo with no problems but am getting ready to take another long trip in it and am afraid of the same thing happining. Where the heack did all that oil go. Around town it doesn't burn a drop or leak at all. I do regular oil changes and it always has teh same amout of oil as when i last filled it up. So what gives????

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69 Camaro RS, 355ci mild cam, Preformer rpm intake, edelbrock 600 carb, 350 turbo w/ shift kit 2500 stall, 10 bolt 2.73 any more questions ask

When you're cruising,the engine has high vacuum.I would guess the valve seals are leaking.Is there any blue smoke on first start up in the morning?

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68 z28 ,68 rs 327 ,73 454 vette, 2 goofy kids

I would also guess valve seals. On a downhill, coast for a bit then step on the gas and see if there is blue haze/smoke behind you from the oil being sucked into cylinder(s) during the high vacuum coasting. If it were rings, I'd think you would see it driving around.

You might replace your pcv valve also. A friend had this problem, using 2 quarts of oil on a 200 mile round-trip at steady high speed. On his it was the pcv valve. Didn't use any oil around town.

Jody

when you replace the PVC make sure theres a baffle under it. but it does sound like the valve seals are bad.

I've got this exact problem. 67 327/210 with 151,000 miles, took it on a 200 mile road trip on the interstate at a steady 70-75. I knew it would probably use some oil on the trip and had planned to change the oil when I got back so I put 6 quarts of oil in the trunk. I used 5 quarts in 200 miles!

It seems like a car using that much oil would smoke heavy all the time.

I've noticed a difference between my 327/210 No AIR and others in the oil tube cap. Mine is a breather type http://linkpro.net/camaro/images/engine/MVC-011F.JPG

Could the wrong cap cause oil problems?

I've got the old style screw in PCV valve so I haven't been able to replace it, but it still rattles when I shake it. Doesn't that mean it's ok? http://linkpro.net/camaro/images/engine/MVC-012F.JPG

Does anyone know of a source for these? They appear on Ebay from time to time, but since GM dropped the part is there a conversion kit to use the hose mounted type? When you look up the part number for a 67 327 2bbl at the parts store you get the number for an inexpensive hose connector type.

Thanks for any suggestions,

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Damon Linkous
'67 Camaro Z21
http://www.linkpro.net/camaro

make sure where it plugs into the carb base or intake that the hole isn't plugged solid with oil crud. but for an engine of that year i'll bet its the valve seals.
don't know why but i really like the looks of a stock motor,kind of gets you excited!but i still like aluminum and crome too.

Would running a PCV valve and un-baffled valve covers cause a problem? My heads were re-built last August and my short block was just redone and it is smoking again. Large puff at start up and some when I let off the throttle on the street. Sounded like valve seals to me, but I used the Comp ones when I did the short block. Motor has less than 500 miles on it...

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Mark

1992 Firebird 355/Six Speed (Soon to be LT1)
1991 RS 350 / 700-R4
1987 Toyota Pickup 383 / 500 + HP 10.963 @ 119.95 Slicks / 11.997 @ 114.23 Radials
"Speed KILLS, so drive a FORD and live forever!"
http://personal.lig.bellsouth.net/~racer383/

Member of the "unwanted" 3rd Gen group.

I once forgot to install a plug in the block on the fuel pump boss. There are two threaded holes one above the other. One of them goes all the way through into the area by the fuel pump drive shaft. It would only leak when driving at steady speeds and would leak a lot more if you have removed the fuel pump push rod and are running an electric fuel pump. I never saw a single spot in the driveway. Just a weird one that I thought I would pass along. http://www.camaros.net/forum/redface.gif

I posted about the exact same problem a while back, you can check this post for more ideas:
http://www.camaros.net/forum/Forum1/HTML/003937.html