Similar 
402 oil pressure
Thread Starter
11 Second Club
Joined: Dec 2004
Posts: 196
Likes: 0
From: columbus, ohio
402 oil pressure What are you guys gettin for oil pressure. Its a new oil ls6 oil pump on a 402 ls2 motor. We are getting around 25-45psi depending on what speed or if we are at idle. It is a fram oil filter with 5w-30 regular oil for motor break in. On the old ls6 setup we had 45-60 all the time, but we used 10w-30 synthetic with a k&n oil filter. So is it just the oil we are using or should there be more pressure.
Mine is around 45 psi at 950 rpm idle and 60 psi at highway speeds. This is at full operating temperature with 10w-30 non-synthetic oil. I have a stock, unported LS6 oil pump. Engine has about 2,000 miles on it. Who built your shortblock?
Thread Starter
11 Second Club
Joined: Dec 2004
Posts: 196
Likes: 0
From: columbus, ohio
Originally Posted by DrkPhx
Mine is around 45 psi at 950 rpm idle and 60 psi at highway speeds. This is at full operating temperature with 10w-30 non-synthetic oil. I have a stock, unported LS6 oil pump. Engine has about 2,000 miles on it. Who built your shortblock?
Originally Posted by linn.35
What are you guys gettin for oil pressure. Its a new oil ls6 oil pump on a 402 ls2 motor. We are getting around 25-45psi depending on what speed or if we are at idle. It is a fram oil filter with 5w-30 regular oil for motor break in. On the old ls6 setup we had 45-60 all the time, but we used 10w-30 synthetic with a k&n oil filter. So is it just the oil we are using or should there be more pressure.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
What do you guys show on your engine build sheets for oil clearance on the main, rod and cam bearings? Oil pressure is a function of the following things as best as I can tell:
1. Pump capacity at a given RPM (i.e. gallons/liters per minute at a given RPM and pressure)
2. Restrictions to flow between the pump and the oil pressure gage (restriction in the galley, through the filter, etc.)
3. Leakage rate due to
a. Unintended errors like leaving a plug out of an oil galley or a loose fitting, etc.
b. Oil clearance on bearing surfaces, valve lifter bore clearances, etc.
4. Setting of the oil pressure regulator
5. Oil viscosity (due to weight and temperature).
Steve
1. Pump capacity at a given RPM (i.e. gallons/liters per minute at a given RPM and pressure)
2. Restrictions to flow between the pump and the oil pressure gage (restriction in the galley, through the filter, etc.)
3. Leakage rate due to
a. Unintended errors like leaving a plug out of an oil galley or a loose fitting, etc.
b. Oil clearance on bearing surfaces, valve lifter bore clearances, etc.
4. Setting of the oil pressure regulator
5. Oil viscosity (due to weight and temperature).
Steve
I'm seeing what I think are pretty high oil pressures: 65psi on load, and 50 psi idle. Probably normal tho.
I'm running 20w-50 with an oil cooler, accusump, and remote AC-Delco filter.
Where is the oil pressure regulator?
I'm running 20w-50 with an oil cooler, accusump, and remote AC-Delco filter.
Where is the oil pressure regulator?
