Johnv

Hi,

Last time I had my pump out for a cam swap I hand ported it to improve flow and shimmed the releif valve for a little extra pressure.

Just hooked up some aeroforce scan gauges and wounder if pressure is a little high - idles at 60 psi and hits 90 psi WOT.

Maybe i overdid it with the shims - 3 mm from memory, or releif valve is sticking.
I do run a fairly thick oil also (Penrite HPR 30) which probably doersn't help.

svsgt1

Is that oil pressure when the car is hot or cold?

Johnv

after 10 mins running

v-8

IDK, but that does sound that wierd, my 6.0 with a stock oil pump has 60 at idle and 90+ at WOT, mabe its got a problem 2???

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iTrader: (1)

My 408 idles at 65-70psi when its warmed up.

kwiksilverz

So is stock on an LS2/6.0 supposed to be in the 65-70 psi range at idle warm? I am trying to figure out why my lifters won't pump up and have 35 at idle. Thanks.
Joe

Johnv

Went for a good long run today,. hot idle 50psi and wot 75psi
so must be the higher viscosity oil keeping it up there when engine is not right up to temp