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on the right of engine 4.3 there is so much pressure it will shoot oil up in your face from the oil return hole that goes back into the lifter gallery, have never seen this in my life.

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8y ago
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9y ago

Around 30 to 40 psi when at full operating temperature.

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9y ago

Hot at idle in drive, 20 psi.

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Q: How much oil pressure should a Chevy 4.3 Z motor have?
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