10-24-2013, 09:21 AM | #1 |
460 RWHP 420 RWTQ
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GM Oil pump fail
Hi guys, finally got bit. Started it up and rolled about 50 feet and got the dreaded "No Oil Pressure" message. Shut it down. I know you've heard this story before. Here is the twist...
This was already a new pump installed when I did my CAM at 10,000 miles. I am now just over 25,000. JDP motorsports suggested the early change as a preventive measure at that time. Little did they know that the GM pumps continue to fail even in the new year models and was not just a bad batch problem. They have fixed 6 other Camaro's already this year apparently. So the moral to my story and maybe what you readers should take away is don't replace bad with bad. I am going to put a Melling oil pump in this time which is what JDP is using going forward. I am just hoping that there was no damage up top to add to my grief. That is all! Have a good day.
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10-24-2013, 09:41 AM | #2 |
Fabricator
Drives: 2011 2SS Summit White Join Date: Jun 2011
Location: Langdon, AB
Posts: 505
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Thanks for letting us know. Hopefully no damage!!
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Roto-fab CAI
Unobtainium Welding Exhaust ARH LT's 393whp L99 GPI VVT Turbo Cam-in |
10-24-2013, 12:28 PM | #3 |
Drives: C6 Z06 Join Date: Nov 2010
Location: Houston TX
Posts: 109
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Sorry to hear but wow lack of details.How did it fail?Debris cause a the reliefe plunger to be stuck i assume? No aftermarket pump will fix that unfortunetly as they all are copies of the OE design in that regard.Bad batch? What was bad about them?
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10-24-2013, 12:31 PM | #4 |
Drives: 2013 Camaro 1SS Join Date: Mar 2010
Location: Allentown, PA
Posts: 107
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Is it a more aggressive cam which is causing these to break, or is this happening on stock engines as well?
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'13 1SS - TSP 229/236 112LSA Cam, TSP 1 7/8" LT headers with off-road pipes
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10-24-2013, 02:39 PM | #5 | |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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Quote:
Ls pumps have sucked since 1997 they are all the same. Except the L99's but the melling a are still an upgrade.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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10-24-2013, 02:41 PM | #6 |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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Pump failures have absolutely NO correlation with big cams.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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10-24-2013, 02:48 PM | #7 | |
460 RWHP 420 RWTQ
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Quote:
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10-29-2013, 09:44 AM | #8 |
460 RWHP 420 RWTQ
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Fuuuuuu****K! Just got the verdict. Scored my CAM to sh*t, lifters are bad, check valve completely stuck open on pump = no pressure. Only ran for less than a minute this way. Looks like major dollars for less than 15,000 miles of run time. Can't believe it. :((
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10-29-2013, 09:54 AM | #9 |
[COTW 5/12/14]
Drives: 2012 CRT NF Cammed 2SS/RS For Sale Join Date: Oct 2011
Location: NOLA
Posts: 6,115
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What a nightmare, sorry man, thats awful.
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10-29-2013, 10:21 AM | #10 | |
I'll be back...
Drives: Subaru, HD Road Glide Special Join Date: Apr 2012
Location: Omaha, NE
Posts: 3,036
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Quote:
Cam brand? Oil brand? Sorry for your troubles, OP. Good luck, my friend.
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Bye bye, Bumblebee!
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10-29-2013, 11:25 AM | #11 | |
460 RWHP 420 RWTQ
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Thanks! Appreciate the empathy...
Quote:
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10-29-2013, 05:03 PM | #12 |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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Mobil 1 makes me cringe when guys/gals get aggressive cams
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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10-29-2013, 05:10 PM | #13 |
Drives: SS RS SIM Join Date: Jul 2009
Location: Greenville, KY
Posts: 201
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10-29-2013, 06:52 PM | #14 |
Drives: 2011 SS/RS LS3 Join Date: Oct 2010
Location: Miami
Posts: 528
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Sounds like another one of the comp cam failures. A chunk of a cam for less then 60 seconds without oil pressure seems like a bit much.
I once had a Dodge Ram with a 318 where the old gasket stuck to the block after changing the oil and filter. With more then 1 minute running driving to an exit with no oil pressure I had the truck towed home, put a new filter and oil, and all's well for 140,000 miles and counting (my brother in-law still has it on the road). I've got a the factory oil pump in my car with over 30,000 miles since a cam swap (ZR1 cam) with nothing but Mobil 1 0W40. The rev limiter is set at 6,800 rpm and is brought that high pretty frequently with dozens of 1/8 mile passes. Only at my last oil change did I start adding a ZDP additive. Granted my cam uses stock springs which aren't high pressure but I wonder how many of the oil pump failures posted have been with comp cams? |
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