C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Tune-Up Partially Done

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Old Apr 7, 2010 | 10:04 PM
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Default Tune-Up Partially Done

Well, today I changed my oil, filter, plugs, wires, cap and rotor on my 85 Z51. The car runs and idles much better. No more stumble on acceleration and a much better idle at around 680-720. However, when I put in oil, it took 6qts and is still barely half way to the full mark...Is this normal?

I still have a fuel filter and Bosch III's to go on too!
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Old Apr 7, 2010 | 10:06 PM
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Originally Posted by Bucs34
Well, today I changed my oil, filter, plugs, wires, cap and rotor on my 85 Z51. The car runs and idles much better. No more stumble on acceleration and a much better idle at around 680-720. However, when I put in oil, it took 6qts and is still barely half way to the full mark...Is this normal?

I still have a fuel filter and Bosch III's to go on too!
Check dip stick tube to make sure its in it's proper place.
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Old Apr 7, 2010 | 10:14 PM
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It should not take more than 6 quarts. Is it the stock pan? Check dip stick tube.
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Old Apr 7, 2010 | 10:16 PM
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Not sure if its the stock pan. How do I check the tube?
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Old Apr 8, 2010 | 12:21 PM
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it took a total of 7 quarts to fill it...any ideas?
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Old Apr 8, 2010 | 12:35 PM
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Got a pic of the oil pan?
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Old Apr 8, 2010 | 01:12 PM
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thats the best I can do really. I was laying on the drivers side of the car stiking my hand underneath with the camera so you can get a sense of perspective. The pan definitely dips down but Im not sure if thats stock or not.
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Old Apr 8, 2010 | 01:23 PM
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My 91 has a pan I bought that was stock and it has the drain plug facing the rear of the car not the side. Certainly doesn't look like that at all.
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Old Apr 8, 2010 | 01:26 PM
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hmmmmm..very interesting. For all I know it could be aftermarket. I mean the previous owner didnt even bother telling me it was a Z51 either. I didnt even realize it till I looked at the window sticker!
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Old Apr 8, 2010 | 01:29 PM
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Never mind. I just checked ebay for 85 oil pans and they might be that one. Still, I would have doubts about it needing so much oil
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Old Apr 8, 2010 | 01:42 PM
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Don't forget to swap out your PCV valve, too. It's an important (but often neglected) tune-up item. Fuel filter, air filter, and O2 sensor wouldn't hurt, either.
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Old Apr 8, 2010 | 02:35 PM
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PVC is done. Air filter is new. And I have a fuel filter waiting! I don't know if ill do the o2 sensor though.
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Old Apr 9, 2010 | 09:48 AM
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Anymore input on the pan being stock or not?
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Old Apr 9, 2010 | 06:30 PM
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Originally Posted by Bucs34
Anymore input on the pan being stock or not?
Looks stock to me. Your stick must be incorrect. Next time you do an oil change, put 5 quarts in and re mark the stick. Is the tube pushed all the way in the block?
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Old Apr 10, 2010 | 08:39 AM
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make sure you didnt pull the dipstick tube out a little when you pulled the dipstick.

Think with your dipstick jimmy!!!
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Old Apr 10, 2010 | 09:32 AM
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Check your dipstick. If it is anything like mine, it has the part you insert into the block and the other end. The part near the block has a reverse groove (Not sure what it is called) but you push it in till it hits the block.
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Old Apr 10, 2010 | 11:00 AM
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that looks like a Milodon pan...holds 6 qts. I have the same one.
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Old Apr 10, 2010 | 11:19 AM
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Originally Posted by Mark85Vett
that looks like a Milodon pan...holds 6 qts. I have the same one.
I wish we could tell for certain or change the pan out. I'd hate to tell him to go to 5 quarts and have it be wrong. Wish there was some way we could know. I thought Miloden pans were gold irridated? Is there a stamping there that will confirm it for sure?
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