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Old 06-04-2010, 10:43 PM
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Small block 350 No Oil Pressure

Hey everyone, I just got done rebuilding my 1990 small block 350 and I cant seem to get any oil pressure. When I run the engine I get about 5 pounds, if that at idle. When I primed the motor with a drill I could see oil coming out the pushrods. To be sure oil was flowing I pulled the 12 volt coil wire and mechanical pressure gauge fitting, when cranking over the engine oil came flowing out. So I know for sure oil is flowing, but no pressure at all. I had the crank ground .10 under and installed the correct bearings. I had the engine shop install all of the cam bearings too. Also, the oil pump is brand new. Any ideas would be great. Thanks!!! , Dustin.

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Old 06-05-2010, 12:11 AM
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Did you or the machine shop install the 2 - 1/2" oil galley plugs at the front of the lifter valley, directly behind the front cover above the cam gear??
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Old 06-05-2010, 03:27 AM
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You may also want to check the same plugs that 327nut is referring to, they are pressed in and if there not staked they can work there way out. You may also want to check where you have your gauge installed, if trash is in the fitting or the line the gauge won`t read correctly. Or it could simply be the gauge isn`t anymore good. As usually, if one of the oil galley plugs is loose or has came entirely out, it can`t build enough oil pressure to make it to the push rods.
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