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Old 09-28-2011, 11:20 PM   #1
Raptor626
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Oil Pump issue. Is the L99 just as prone?

Ok so over the summer a lot of members were reporting that their oil pumps would fail due to a stuck relief valve. Oil pressure would subsequently drop and some unfortunate members even suffered catastrophic failures. A solution to this problem was to "shimmy" the relief valve to prevent it from getting stuck. Originally I thought all 6.2's had this issue, but then a member in the thread below stated that L99's actually use a different pump, one with a "wider pump gear".


Does that therefore mean that L99's are immune to this oil pump failure or not?



See post #19 and 20.

http://www.camaro5.com/forums/showth...l+pump+failure

Last edited by Raptor626; 09-29-2011 at 12:15 AM.
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Old 09-28-2011, 11:29 PM   #2
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i wouldnt chance it...get the moroso upgrade man...this happened to me...thank God i was sitting idle when it did...
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Old 09-28-2011, 11:31 PM   #3
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Damn bro. That's a pretty huge job. How much do you estimate labor to be?
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Old 09-28-2011, 11:40 PM   #4
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the oil pump was about 150, i alsodid the belt tensioner, dunno how much was...but if ur gonna do this its about 800 labor,,,i would spend another 2k for a full cam swap, with upgraded springs, retainer etc.
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Old 09-29-2011, 07:03 AM   #5
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I think of this as more of a "do it if you're already in there" kind of thing. It seems like a waste to spend $1k to change just the oil pump on your stock engine when it's covered under a warranty.
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Old 09-29-2011, 10:01 AM   #6
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I have the L99 and afte the lifter swap I have lots better oil pressure. Cold idle is 50lbs. Warmed up cruising is around 45psi if It quits I'm going to hold it to the floor. And let GM EAT IT
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Old 09-29-2011, 10:03 AM   #7
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I have yet to read about a l99 having this failure..
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Old 09-29-2011, 11:39 AM   #8
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Quote:
Originally Posted by hunter1660 View Post
I have the L99 and afte the lifter swap I have lots better oil pressure. Cold idle is 50lbs. Warmed up cruising is around 45psi if It quits I'm going to hold it to the floor. And let GM EAT IT


So you just have the LS3 conversion and the stock L99 oil pump?
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Old 09-29-2011, 11:59 AM   #9
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I have yet to read about a l99 having this failure..

That makes me feel better, but I think it's one of those things where only time will tell.
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Old 09-29-2011, 12:13 PM   #10
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$800 for an oil pump change? wow
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Old 09-29-2011, 12:42 PM   #11
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$800 for an oil pump change? wow

I know It seems that everything costs so much more in the North East.
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Old 09-29-2011, 12:56 PM   #12
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No ls3 for me I'ma hold out for the warranty kinda guy good thing too...had afm lifters replaced under warranty after a year listened to it tick tick tick on startup after it set for a Couple hours .. The oil pressure improved greatly with the lifter swap..
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Old 09-29-2011, 12:56 PM   #13
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$800 for an oil pump change? wow
a LOT of work is involved with this though..pretty much the same amount of work as doing a cam swap minus having to pull a few parts.

plus the part is 1-200
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Old 09-29-2011, 01:01 PM   #14
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a LOT of work is involved with this though..pretty much the same amount of work as doing a cam swap minus having to pull a few parts.

plus the part is 1-200

Right, it would definitely make sense to just cam it while you're at it.
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