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How many miles on it? LT1 all have low oil pressure, 10-15 at idle is common, but zero isn't good. could just be the sending unit? they are about $30 new. You might also think about change to a heavier oil 10-30. And I'm also not a big fan or Penzoil or Quakerstate, to me they seem to thin out more. I put Penzoil in my truck ( 5.3 LS1 ) and heard allot more piston slap at start up, I'm running Castrol in it now and it's better.
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
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