Keep in mind the oil capacity should hold 1qt of oil per 10psi oil pressure. If you’re seeing 80+ psi you’ll need a minimum of 8 qt capacity to keep it fed without foaming/cavitation at higher rpm.
THANK YOU. This upload saved me so much head ache. I had the exact some issue as you. Aluminum block, 6.0, low pressure. Switched pumps. Bam 60-70 at cold idle. You’re the man.
Yup, if i ever have to take off my balancer i would replace my 10296 (which is 18% over on volume) with a 355 (33% over on volume) I still idle around 40psi hot on 10-40 but as long as you run a moderate pressure spring you won't blow out seals etc.
The DOD pumps are performance pumps right out of the box. No reason to switch to aftermarket. I clip 2 rungs off the bypass spring and run the factory 5.3 oil pump to 7800. Works great. With the DOD ports blocked off and the OEM spring I'd burry the 100psi oil gauge quick.
What were your bearing clearances? I am running a gen 3 L33 aluminum engine. I reused all rod and crank bearings and the clearances were all like .0015 or so. All less than .002. Using the summit high volume pump (it was melting pump) and 10w40 oil, I have like 85 psi pressure at 7000 rpm and 40-50 idle pressure. I don’t think aluminum engines “grow” enough to affect oil pressures. I think all the LS stuff ironor aluminum were just set up with tight clearances from the factory. You run .003 on the rods and mains you better have a big pump or thick oil or both.
Checkout this link and you'll note some models have high flow pumps and some don't. Gen 3 doesn't have dod passages so they spec a standard volume Melling www.melling.com › ...PDF 2022 GM LS PARTS GUIDE
I agree that the gen 4 motors need more oil for dod, vvt, whatever. But clearly LS engines suffer oil pressure issues more from engine clearances than any other reason. 6 liters are notorious for low oil pressure because of worn cam bearings bleeding off oil. My BBC bracket motors with huge oil pumps only make 70 psi oil pressure at 7,000 rpm with 10w40 oil. They will make 90-100 psi with 20w50 oil. They won’t make enough oil pressure hot with 5w30 oil and it is because of their loose .003 clearances for racing. My point is this: your motor doesn’t make 90 psi of oil pressure like my L33 does because of your bearing (probably cam ) clearances, not because it is an aluminum engine. For whatever reason my L33 just has tight oil clearances similar to the day it rolled out of GM.
@sanger440 yes I understand your comments for sure, I just couldn't believe how lousy the oil pressure was on the low volume pump with all new bearings incl. Cam. Sure there is lots to it thanks for your comments
I have an ls3 swapped into a 90s gmc truck and I installed the m10295 as well and having the same problem… how long did you run the car with this pump in it before you swapped the pump out? Trying to see if I can just swap pumps after an upcoming car show 😅
is LS2 gen4? iam having an issue with my ls2, i did install 10296, my hot idle goes to 22 to 24psi, on high rpm i reach 40 45 maximum, so which pump you recc me to install please? and thank you for your videos it gaves me hope!
@@WestcoastWrenchin but the HV will help get more pressure than normal 10355 right? iam about to install it and dont want to loss hope with my tbss again :\
Keep in mind the oil capacity should hold 1qt of oil per 10psi oil pressure. If you’re seeing 80+ psi you’ll need a minimum of 8 qt capacity to keep it fed without foaming/cavitation at higher rpm.
Are you applying that to all engines or the LS platform
😂
THANK YOU. This upload saved me so much head ache. I had the exact some issue as you. Aluminum block, 6.0, low pressure. Switched pumps. Bam 60-70 at cold idle. You’re the man.
Hahahaha I'm happy to hear that! Nothing like having nice oil pressure!
Definitely!!!! I am going to be running this pump on my Ls3 swap. Ls3/6L90E in a 03'Crown Vic Police Interceptor. N/A build.
Yup, if i ever have to take off my balancer i would replace my 10296 (which is 18% over on volume) with a 355 (33% over on volume) I still idle around 40psi hot on 10-40 but as long as you run a moderate pressure spring you won't blow out seals etc.
Cant wait to see the new Catch can and improved oil drain back system you come up with next...
Yeah aluminum block grows increaing main bearing clearances by + .001.
The DOD pumps are performance pumps right out of the box. No reason to switch to aftermarket. I clip 2 rungs off the bypass spring and run the factory 5.3 oil pump to 7800. Works great. With the DOD ports blocked off and the OEM spring I'd burry the 100psi oil gauge quick.
I got one for you…. Brand new motor, oil pressure on cold start and warm up. Minimal to nothing coming out under valve covers.
Very odd!
What were your bearing clearances? I am running a gen 3 L33 aluminum engine. I reused all rod and crank bearings and the clearances were all like .0015 or so. All less than .002. Using the summit high volume pump (it was melting pump) and 10w40 oil, I have like 85 psi pressure at 7000 rpm and 40-50 idle pressure. I don’t think aluminum engines “grow” enough to affect oil pressures. I think all the LS stuff ironor aluminum were just set up with tight clearances from the factory. You run .003 on the rods and mains you better have a big pump or thick oil or both.
Checkout this link and you'll note some models have high flow pumps and some don't. Gen 3 doesn't have dod passages so they spec a standard volume
Melling
www.melling.com › ...PDF
2022 GM LS PARTS GUIDE
I agree that the gen 4 motors need more oil for dod, vvt, whatever. But clearly LS engines suffer oil pressure issues more from engine clearances than any other reason. 6 liters are notorious for low oil pressure because of worn cam bearings bleeding off oil. My BBC bracket motors with huge oil pumps only make 70 psi oil pressure at 7,000 rpm with 10w40 oil. They will make 90-100 psi with 20w50 oil. They won’t make enough oil pressure hot with 5w30 oil and it is because of their loose .003 clearances for racing. My point is this: your motor doesn’t make 90 psi of oil pressure like my L33 does because of your bearing (probably cam ) clearances, not because it is an aluminum engine. For whatever reason my L33 just has tight oil clearances similar to the day it rolled out of GM.
@sanger440 yes I understand your comments for sure, I just couldn't believe how lousy the oil pressure was on the low volume pump with all new bearings incl. Cam. Sure there is lots to it thanks for your comments
I have an ls3 swapped into a 90s gmc truck and I installed the m10295 as well and having the same problem… how long did you run the car with this pump in it before you swapped the pump out? Trying to see if I can just swap pumps after an upcoming car show 😅
@@calebwilliams7449 I ran it for a year and got maybe 15 passes on the car NA
So in a non-turbo application do you think the 10295 is fine in an aluminum block?
It wasn't fine for me last year when I was na, I would go 10355
10355 or 10355HV? I see 2 options - thanks!
@@WestcoastWrenchin
@@origin8or standard 10355. It produces 33% more volume already than the 10295
Appreciate it!! Just finished building my motor and you've saved me having to pull it out again. Cheers!! @@WestcoastWrenchin
@@origin8or don't thank me until your oil pressure is good 🤣🤣🤣🤣
What are your thoughts for a LSX block? In the middle of the machine work now....
That one is beyond me, I'd think 10355 again but I'm not positive
Thanks a bunch for your thoughts. It will be a wet sump engine, running a spacer on the longer crank snout. @@WestcoastWrenchin
is LS2 gen4? iam having an issue with my ls2, i did install 10296, my hot idle goes to 22 to 24psi, on high rpm i reach 40 45 maximum, so which pump you recc me to install please? and thank you for your videos it gaves me hope!
10355, yes it's Gen 4
@@WestcoastWrenchin why you didnt go with 10355hv?
@@slowrook I didn't think I needed something that high of volume
@@WestcoastWrenchin but the HV will help get more pressure than normal 10355 right? iam about to install it and dont want to loss hope with my tbss again :\
@@slowrook yea it'd do even more pressure. I'd checkout mellings recommendation chart or call their tech support
Lucus