Cam swap, now low oil pressure… - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SS_CTS-V · 04-24-2024, 12:29 AM

Damn the luck! Guess I pinched the oring when installing the new oil pump the second time… Looks like I’ll be going back in there to put a new oring on. I only have 15psi at hot idle. Not tuned yet, just initial start up. So maybe 600 rpm, but since I installed a Mellng 10295 and fresh oil, darn should have better than 15psi.

Not looking forward to ripping it all apart again.

Tommi · 04-24-2024, 01:06 AM

If you remove the oil pan completely, you can install the pickup tube carfully and not gamble on the O-ring pinching.

To be able to remove oilpan engine still in the car, I cut the small crossmember off and made flanges to it to be bolted back on.

morepowerjoe · 04-24-2024, 06:27 AM

Does your engine have vvt?

SS_CTS-V · 04-24-2024, 10:57 AM

Quote:

Originally Posted by morepowerjoe

Does your engine have vvt?

Nope, standard LS3. No VVT or DoD.

1JEWLDSSRS · 04-24-2024, 11:42 AM

Quote:

Originally Posted by SS_CTS-V

Damn the luck! Guess I pinched the oring when installing the new oil pump the second time… Looks like I’ll be going back in there to put a new oring on. I only have 15psi at hot idle. Not tuned yet, just initial start up. So maybe 600 rpm, but since I installed a Mellng 10295 and fresh oil, darn should have better than 15psi.

Not looking forward to ripping it all apart again.

Well that bites!! I have the 10295 in my engine, and at hot idle mine shows 34-39psi with 5w30 mobil 1, and around 54-55psi at cruising speed and rpm. 65-68 at wot.. Not sure which spring they installed in the pump when it was installed. I know it comes with an extra one. Good luck, hope you get it fixed..

morepowerjoe · 04-24-2024, 02:09 PM

Quote:

Originally Posted by SS_CTS-V

Nope, standard LS3. No VVT or DoD.

The reason I ask is when I changed my pump the second time I went with the 10295 and my pressure went down to 15 psi. It was because I have an l99 with vvt and it has a high-volume pump and when I went with the 10295 it is a high-pressure standard volume. So, then I changed it out back to a high-volume pump and my pressure was back to normal. I know this probably doesn't help just thought I would through it out there.

SS_CTS-V · 04-24-2024, 11:24 PM

Appreciate the comments from you all. I hope to have another go at this over the weekend. Fingers crossed a new oring fixes it. If not I’ll probably order another pump and try again.

04-24-2024, 12:29 AM	#1
SS_CTS-V Drives: 2015 SS, 2006 CTS-V (wrecked...) Join Date: Jul 2017 Location: Tampa Posts: 150	Cam swap, now low oil pressure… Damn the luck! Guess I pinched the oring when installing the new oil pump the second time… Looks like I’ll be going back in there to put a new oring on. I only have 15psi at hot idle. Not tuned yet, just initial start up. So maybe 600 rpm, but since I installed a Mellng 10295 and fresh oil, darn should have better than 15psi. Not looking forward to ripping it all apart again.

04-24-2024, 01:06 AM	#2
Tommi Drives: 2010 Camaro SS manual Join Date: Feb 2022 Location: Finland Posts: 29	If you remove the oil pan completely, you can install the pickup tube carfully and not gamble on the O-ring pinching. To be able to remove oilpan engine still in the car, I cut the small crossmember off and made flanges to it to be bolted back on. __________________ 2010 Camaro SS, LS3 + 6spd manual. 1975 Volvo 242, 357SBC + 6 spd manual. 1978 Blazer offroader with LS1, 1-ton axles.

04-24-2024, 06:27 AM	#3
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,105	Does your engine have vvt? __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817

04-24-2024, 11:24 PM	#7
SS_CTS-V Drives: 2015 SS, 2006 CTS-V (wrecked...) Join Date: Jul 2017 Location: Tampa Posts: 150	Appreciate the comments from you all. I hope to have another go at this over the weekend. Fingers crossed a new oring fixes it. If not I’ll probably order another pump and try again.