Low oil pressure at idle, pulling my hair out, looking for any and all options.

[mattbta]

On the cam choices, check out some Richard Holdener vids here: https://youtube.com/@richardholdener1727


He dyno tests a handful and seems to be pretty informative.

 

[Geotrash]

My rebuilder (ex) is adamant that the Cam Motion stage 2 is the exact same as the BTR Truck Norris, or so close that they would perform exactly the same. Pushed him to the back burner and talking to my other engine guy.

Good call to put that guy on the back burner. The BTR Truck Norris cam does NOT have the same specs as the Cam Motion Stage 2 truck cam. The lift and durations are very close but the difference is in the lobe separation angle. Truck Norris = 107 and the Cam Motion is 117. That's the difference between a ton of idle chop and a smooth idle. If chop is what you want, then go for it, but I had a choppy cam for a while and hated it for daily driving.

 

[Levin37]

So quick update; LS364/425 is ready for next week 8K Cdn delivered to my doorstep. Would still need to swap the cam and springs to match so add another G, and then $750 for a dyno tune but that's happening regardless. Might still go that way in the end but not now. Truck still drivable and has good power and pressure most of the time but it gets "stuck" and will only rumble along at like 80kph with no power and then not restart, like the timing is fully advanced(or retarded). So I've made the choice to just do a top end tear down, get the heads off and cam out, inspect the bearings. Bearings bad, pull the block for rebuild/swap, bearings good then new cam, VVT delete and new/rebuilt heads. Top end could use a refresh anyways and I believe the block to be solid for another 100k or so. I've gone ahead and ordered a pile of parts, like 5k worth, so I'm committed now. Used Geotrashs cam swap thread for a guideline, so props to him, it really helped me get my mind around things. Here's the list;

From Summit;
ARP 134-1202 - ARP Chromoly Header Bolt Kits
ARP 134-3610 - ARP Pro Series Cylinder Head Bolt Kits
ARP 234-2503 - ARP Balancer Bolts
Flotek LS3-500 - FLOTEK 276cc LS3 Cylinder Heads
Summit Racing SUM-8720-1 - Summit Racing™ Pro LS Camshaft & Spring
Summit Racing SUM-V8010-8 - Summit Racing™ Race Valves for Chevrolet
Trick Flow Specialties TFS-30678505 - Trick Flow® VVT Delete Combos

Michigan Motorsports (Ebay store)
5/16 7.400 Chromoly Pushrods
LS3 Rocker Arms with upgraded Trunion Kit Installed
Delphi LS7 Lifters and Guide Trays

Rock Auto
FEL-PRO 26192PT Cylinder Head Gasket
GM GENUINE 12569427 Intake Valve
GM GENUINE 12589016 Camshaft Gasket
GM GENUINE 12600936 Rocker Arm Shaft Support
GM GENUINE 12639759 Air Deflector

Amazon
MAHLE Original MS16124 Exhaust Manifold Gasket
ACDelco 252-901 Professional Water Pump
GM LS Harmonic Balancer Install Tool Pulley
Valve Spring Compressor Tool Compatible with GM
Lucas Oil 10153 Assembly Lube

Have a few more little parts and speciality tools to order, building another list.

Will update again once I have it apart and possibly create another thread for the head build/engine assembly

 

[Geotrash]

So quick update; LS364/425 is ready for next week 8K Cdn delivered to my doorstep. Would still need to swap the cam and springs to match so add another G, and then $750 for a dyno tune but that's happening regardless. Might still go that way in the end but not now. Truck still drivable and has good power and pressure most of the time but it gets "stuck" and will only rumble along at like 80kph with no power and then not restart, like the timing is fully advanced(or retarded). So I've made the choice to just do a top end tear down, get the heads off and cam out, inspect the bearings. Bearings bad, pull the block for rebuild/swap, bearings good then new cam, VVT delete and new/rebuilt heads. Top end could use a refresh anyways and I believe the block to be solid for another 100k or so. I've gone ahead and ordered a pile of parts, like 5k worth, so I'm committed now. Used Geotrashs cam swap thread for a guideline, so props to him, it really helped me get my mind around things. Here's the list;

From Summit;
ARP 134-1202 - ARP Chromoly Header Bolt Kits
ARP 134-3610 - ARP Pro Series Cylinder Head Bolt Kits
ARP 234-2503 - ARP Balancer Bolts
Flotek LS3-500 - FLOTEK 276cc LS3 Cylinder Heads
Summit Racing SUM-8720-1 - Summit Racing™ Pro LS Camshaft & Spring
Summit Racing SUM-V8010-8 - Summit Racing™ Race Valves for Chevrolet
Trick Flow Specialties TFS-30678505 - Trick Flow® VVT Delete Combos

Michigan Motorsports (Ebay store)
5/16 7.400 Chromoly Pushrods
LS3 Rocker Arms with upgraded Trunion Kit Installed
Delphi LS7 Lifters and Guide Trays

Rock Auto
FEL-PRO 26192PT Cylinder Head Gasket
GM GENUINE 12569427 Intake Valve
GM GENUINE 12589016 Camshaft Gasket
GM GENUINE 12600936 Rocker Arm Shaft Support
GM GENUINE 12639759 Air Deflector

Amazon
MAHLE Original MS16124 Exhaust Manifold Gasket
ACDelco 252-901 Professional Water Pump
GM LS Harmonic Balancer Install Tool Pulley
Valve Spring Compressor Tool Compatible with GM
Lucas Oil 10153 Assembly Lube

Have a few more little parts and speciality tools to order, building another list.

Will update again once I have it apart and possibly create another thread for the head build/engine assembly

Solid plan. Thanks for following up with your progress.

 

[Foggy]

You will probably end up needed a little diff length pushrods... but you'll have to assemble
it all first, then do the procedure to get your zero lash... So don't throw away your
receipt on those push rods, or wait til it's together then order what you need.
You will def need a good bit of tuning with that cam just to get it start up...
it WILL be choppy with the 112* lobe sep and 218/227 duration

 

[Foggy]

I was looking at the specs of your summit kit...
That's seems like a weird valve spring to use: 600 max lift when your
cam IS 600 lift... I know it's a kit so there must be some variance, but I'd double check
with summit that those springs will work