Oil Pump Question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Blown1LE · 03-09-2019, 09:38 AM

I have the car tore down for a cam upgrade and wondering if I should change the oil pump since I am right there now, looks like the Melling 10296 is a good choice but I cant find any selection of shim kits as I will have to take the pump apart to get it in so I will have to shim it correct ?

I can only work on the car on weekends so it will add another week to the project but from what I have read here it seems like thats the time to do it. The car currently idled just under 30 psi with stock pump so I cant really say it was giving me issues but I also read these pumps are prone to failure and I actually spoke to a guy last night whose pump failed 2 weeks after his cam install

Really need help on deciding which way to go and where to find the shim kits

Thanks

hou30guy · 03-09-2019, 09:48 AM

If it aint broke dont fix it, shouldn't need a shim kit i never have

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DSMer1 · 03-09-2019, 11:03 AM

Shim kit not needed... If you want you can take the front of the melling pump off and use felt gauges to center the drive gears, some refer to this as shimming it.
Replacing the pump is a good amount of extra work but I recommend it. If you replace the pump, you should do the chain also

lionssfan · 03-09-2019, 12:03 PM

i would shim it for sure. i bought several feeler gauges to get the sizes i needed. you can cut the feeler gauge in half so you have two the same size. but dont put the cut side in first when measuring. due to sharp edge. i ended up dropping my pan and removed the pickup tube to insure perfect alignment. my pickup tube was putting to much force on the pump when in place and measuring. i would do the chain too. and Ls2 tensioner. mellings will give two choices on pumps depending on milage and mods. i went with the gm HD chain , if i did it again i would go with cr5 chain. the HD gm chain seemed to loose. I did here but dont know how true the cr5 chain was tighter. you want to be careful with not bending the pickup tube or miss aligned o-ring or damage o-ring. otherwise you will have oil pressure problems.

zz430camaro · 03-09-2019, 12:11 PM

C5R chain is loose too, they all are on these engines. I just grabbed 3 sets of feeler gauges from Harbor Freight and shimmed the pump gears, its easy to do. I used a 10295 standard volume/high pressure pump. My opinion is that the extra volume of a 10296 pump is not needed.

Blown1LE · 03-09-2019, 05:00 PM

Ok cool Thanks for the info

DSMer1 · 03-09-2019, 08:34 PM

https://youtu.be/TsC2EtNOOPE
This will give you a step by step on the procedure

03-09-2019, 09:38 AM	#1
Blown1LE Drives: 2015 Supercharged Camaro 1LE Join Date: Mar 2018 Location: Orlando FL Posts: 221	Oil Pump Question I have the car tore down for a cam upgrade and wondering if I should change the oil pump since I am right there now, looks like the Melling 10296 is a good choice but I cant find any selection of shim kits as I will have to take the pump apart to get it in so I will have to shim it correct ? I can only work on the car on weekends so it will add another week to the project but from what I have read here it seems like thats the time to do it. The car currently idled just under 30 psi with stock pump so I cant really say it was giving me issues but I also read these pumps are prone to failure and I actually spoke to a guy last night whose pump failed 2 weeks after his cam install Really need help on deciding which way to go and where to find the shim kits Thanks __________________ Magnuson Supercharged 2015 1LE RS/2SS. Texas Speed Stage 3 Blower Cam. DSX Aux Pump. e85 Flex Fuel Kit. BMR Suspension. On Instagram @wakeyourneighbors @Blown1LE

03-09-2019, 11:03 AM	#3
DSMer1 Drives: 14 and 15 SS's Join Date: Feb 2018 Location: Minneapolis, Minnesota Posts: 387	Shim kit not needed... If you want you can take the front of the melling pump off and use felt gauges to center the drive gears, some refer to this as shimming it. Replacing the pump is a good amount of extra work but I recommend it. If you replace the pump, you should do the chain also __________________ Bolt-ons!

03-09-2019, 12:03 PM	#4
lionssfan Drives: 2010 2ss camaro Join Date: Nov 2010 Location: mi Posts: 1,184 View My Garage	i would shim it for sure. i bought several feeler gauges to get the sizes i needed. you can cut the feeler gauge in half so you have two the same size. but dont put the cut side in first when measuring. due to sharp edge. i ended up dropping my pan and removed the pickup tube to insure perfect alignment. my pickup tube was putting to much force on the pump when in place and measuring. i would do the chain too. and Ls2 tensioner. mellings will give two choices on pumps depending on milage and mods. i went with the gm HD chain , if i did it again i would go with cr5 chain. the HD gm chain seemed to loose. I did here but dont know how true the cr5 chain was tighter. you want to be careful with not bending the pickup tube or miss aligned o-ring or damage o-ring. otherwise you will have oil pressure problems. __________________ 2012 zl1 stock 7000 miles 2010 TVS2300, BTR cam PD stage 3, ID1050 injectors, CHE bronze trunnions, 7.400" pushrods,.660" lift platinum springs, Titanium ret, Zl1 fuel pump, Kooks LT headers, High flow cats, Roto Fab CAI, Corsa exh., Mellings oil pump, HD chain, ls2 damper, all synthetic, BMR control arms, zl1 toe link, BMR cradle mounts, W/bottle relocation, air scoop deflector, Hennessy wheels, two piece rotor, morimoto fogs, DRL harness, coilovers, Heads up install, mgw shifter, slps splitter, slp spoiler, zl1 side skirts, painted strips, debadged, tinted, 2018 emblems. Edit Signature

03-09-2019, 12:11 PM	#5
zz430camaro Drives: 2015 1LE Join Date: Oct 2015 Location: Cleveland, OH Posts: 1,485	C5R chain is loose too, they all are on these engines. I just grabbed 3 sets of feeler gauges from Harbor Freight and shimmed the pump gears, its easy to do. I used a 10295 standard volume/high pressure pump. My opinion is that the extra volume of a 10296 pump is not needed. __________________ 2015 1LE, TSP 225/236 113+3, VMAX Throttle Body, CAI with race scoop, GPI Ported Intake, Land Speed Stage 2 Heads, 1-7/8 headers, NPP exhaust, 25% Fluidampr, LT1-S Monster Clutch, 485 RWHP & 444 TQ

03-09-2019, 05:00 PM	#6
Blown1LE Drives: 2015 Supercharged Camaro 1LE Join Date: Mar 2018 Location: Orlando FL Posts: 221	Ok cool Thanks for the info __________________ Magnuson Supercharged 2015 1LE RS/2SS. Texas Speed Stage 3 Blower Cam. DSX Aux Pump. e85 Flex Fuel Kit. BMR Suspension. On Instagram @wakeyourneighbors @Blown1LE

03-09-2019, 09:48 AM	#2
hou30guy Drives: 2011 convertible 2ss/rs Join Date: Sep 2015 Location: Houston Posts: 971	If it aint broke dont fix it, shouldn't need a shim kit i never have Sent from my SM-N950U using Tapatalk

03-09-2019, 08:34 PM	#7
DSMer1 Drives: 14 and 15 SS's Join Date: Feb 2018 Location: Minneapolis, Minnesota Posts: 387	https://youtu.be/TsC2EtNOOPE This will give you a step by step on the procedure __________________ Bolt-ons!