MS4 Oil pressure.

2002 SOM SLP SS Camaro. ms4 cam, ported oil pump PRC heads, EWP, ASP UD Pulleys.

Oil pressure was fluctuating bad. I was waiting for it to drop down to 25 like it did before. The thicker GM Oil pump pickup O ring solved this.

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[97warlock]

Looks like a Mechanical pressure gauge. Is it? I an tell by the slight fluctuation at idle.

[35057]

@97warlock .. No.. It's an electrical gauge. The oil pump was just sucking in air and killing the oil pressure.. it was a bad oil pump pickup O-Ring for the ported oil pump. They need a larger O-Ring, from GM parts.

[OldsPowered69]

nice 45psi is solid... my 69 olds is ~ 40-42psi at idle. and up to like 58-60 @ full tilt.

i like ur setup, sounds strong(and scary for a street car)

keep up the great work,

OldsPowered69

[35057]

@OldsPowered69 It's my buddy's car, but I helped build the heads and cam setup. Most of the engine tear down and build up.

[IceCold314]

i have a lt1 on a cold start at idle its about 42psi when its warm its about 2-8psi and sumtimes it reads 0. but on the highway it's around 30psi until i let off the accelerator. if it were really 0 im sure the motor would be locked up any ideas people?

[35057]

@IceCold314 Check up on LS1Tech.com.. Sign in and ask away.. They have an LT1/4 section.

[chrs1313]

yup new oil pump o-ring every time...i learned the hard way too

[robbie1674563]

i use heavy duty oil stabilizer in my differential 100 percent pure form i use it in my lawnmowers and everything i own i had a lawnmower billowing smoke out of it and now it doesnt use a drop of oil just a puff of smoke on start up till the lucas circulates ive used all the lucas products they all work i use all the products for a fact firm believer here

[robbie1674563]

Thats Great My 350 Chevy Engine Has 75 Pounds Cold 50 Hot On The Highway 50 And 55 Pounds Hot It Will Move A Little nothing is perfect but a huge fluctuation would indicate a problem put you a quart of lucas heavy duty oil stabilizer in it will stabilize the pressure thats what i did b4 i put the lucas in i had 40 pouds oil pressure cold no joke now its up to 75 cold and 55 hot 2 quarts of lucas heavy duty oil stabilizer wouldnt hurt it i use 2 and a half

[team510jh0nis]

wth really man. i would have gotten nervous driving like that