gm oil pump - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Fast6.3 · 01-24-2013, 04:56 PM

Hi guys not to keep beating an old horse but my stock oil pump just took a dump after only 20000 miles. luckily it started making noise so I took it to the dealer to get it replaced under warranty before any damage was done. I did notice that oil pressure would drop at idle but didnt think anything off it, I tool it in cause it was making a tapping noise coming from the pulley. So for sure Im upgrading the oil pump when I do mods

SinisterEcho · 01-24-2013, 05:01 PM

Im thinking I need to upgrade mine now that im starting to see these threads pop up. I have and early 2010 build.... Your description has given me some valuable information as far as what to look for thanks. Glad you didn't have any engine failures!

mikeSS · 01-24-2013, 05:22 PM

Quote:

Originally Posted by SinisterEcho

Im thinking I need to upgrade mine now that im starting to see these threads pop up. I have and early 2010 build.... Your description has given me some valuable information as far as what to look for thanks. Glad you didn't have any engine failures!

i honeslty do not think its a build or year thing. i mean hes a got a 2011.

Frid · 01-24-2013, 08:14 PM

There have been numerous talks about these stock pumps going out in the LS3s. Had mine replaced just a few days ago when I had my cam put in.

litle88 · 01-24-2013, 08:25 PM

Melling 10296!

Fast6.3 · 01-24-2013, 09:10 PM

Quote:

Originally Posted by litle88

Melling 10296!

+1

Ucantctchme · 01-25-2013, 12:07 PM

+2. I just put one in over Christmas. I also did a c5r chain, ls2 guide, 3bolt gear, and a trunion upgrade.

StephenS_84 · 01-25-2013, 12:32 PM

Is it mostly in LS3's?

Frid · 01-25-2013, 12:44 PM

The pumps in the L99s supposedly are more durable then the ones in the LS3's, so yes.

SC2150 · 01-25-2013, 01:32 PM

It is the bypass valve sticking in the bore due to the poor care taken in machining. They dont debur them and thats why far to many have issues. The Melling is my choice though.

litle88 · 01-25-2013, 04:11 PM

Quote:

Originally Posted by Ucantctchme

+2. I just put one in over Christmas. I also did a c5r chain, ls2 guide, 3bolt gear, and a trunion upgrade.

^^^Good man^^^

litle88 · 01-25-2013, 04:15 PM

Quote:

Originally Posted by SC2150

It is the bypass valve sticking in the bore due to the poor care taken in machining. They dont debur them and thats why far to many have issues. The Melling is my choice though.

+1
AND the rotor material and cover material do not mesh together and will actually gall and the rotor will occasionally weld itself to the cover. I spoke to a melling engineer personally, luckily he was a Gearhead.

There are still other issues but its one of the reasons stock pumps fail.

1Camaro2SS · 01-26-2013, 03:51 PM

Quote:

Originally Posted by Ucantctchme

+2. I just put one in over Christmas. I also did a c5r chain, ls2 guide, 3bolt gear, and a trunion upgrade.

+1

MightymouseSS · 01-30-2013, 09:04 AM

What are the signs and symptoms of this happening or knowing its going bad?

01-24-2013, 04:56 PM	#1
Fast6.3 Drives: 2016 2SS coupe 2015 3LT Stingray Join Date: Aug 2012 Location: El paso texas Posts: 880 View My Garage	gm oil pump Hi guys not to keep beating an old horse but my stock oil pump just took a dump after only 20000 miles. luckily it started making noise so I took it to the dealer to get it replaced under warranty before any damage was done. I did notice that oil pressure would drop at idle but didnt think anything off it, I tool it in cause it was making a tapping noise coming from the pulley. So for sure Im upgrading the oil pump when I do mods __________________ Ported intake manifold and throttle body kooks 2" headers no cats

01-24-2013, 05:01 PM	#2
SinisterEcho Drives: 2010 2SS/RS M6/LS3 Join Date: Oct 2011 Location: Arvada, Co Posts: 9,872 View My Garage	Im thinking I need to upgrade mine now that im starting to see these threads pop up. I have and early 2010 build.... Your description has given me some valuable information as far as what to look for thanks. Glad you didn't have any engine failures! __________________ My Mod Journal <-- Its updated... again!

01-24-2013, 08:14 PM	#4
Frid Drives: '11 Camaro 2SS/RS LS3 Join Date: Jan 2012 Location: Lexington, SC Posts: 3,483	There have been numerous talks about these stock pumps going out in the LS3s. Had mine replaced just a few days ago when I had my cam put in. __________________

01-24-2013, 08:25 PM	#5
litle88 V8 Lounge member #2 Drives: 2001 Ws6 Join Date: Sep 2009 Location: Burbank,IL Posts: 6,373	Melling 10296! __________________ 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.

01-25-2013, 12:44 PM	#9
Frid Drives: '11 Camaro 2SS/RS LS3 Join Date: Jan 2012 Location: Lexington, SC Posts: 3,483	The pumps in the L99s supposedly are more durable then the ones in the LS3's, so yes. __________________

01-25-2013, 12:07 PM	#7
Ucantctchme Drives: 2010 ss. 1990 RS the faster one. Join Date: Jan 2011 Location: Orlando Posts: 549	+2. I just put one in over Christmas. I also did a c5r chain, ls2 guide, 3bolt gear, and a trunion upgrade.

01-25-2013, 12:32 PM	#8
StephenS_84 Account Suspended Drives: 2011 2SS/RS Join Date: Aug 2012 Location: Ohio Posts: 972	Is it mostly in LS3's?

01-25-2013, 01:32 PM	#10
SC2150 Account Suspended Drives: 2012 Camaro RS, RX supercharged Join Date: Dec 2009 Location: Bradenton, FL Posts: 6,063	It is the bypass valve sticking in the bore due to the poor care taken in machining. They dont debur them and thats why far to many have issues. The Melling is my choice though.

01-30-2013, 09:04 AM	#14
MightymouseSS Drives: 2011 LS3 Join Date: Jan 2012 Location: el paso tx Posts: 547	What are the signs and symptoms of this happening or knowing its going bad?