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Old 11-05-2007, 08:10 AM
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94 chevy 2500 4x4 with 350

I have a 94 chevy 2500 4x4 with 350 in it. At start up I have 55-60 Psi oil pressure after about 15 minutes the oil pressure drops to 10-20psi and the motor starts making a knocking noise. I have been told main bearings but would like a few other opinions.

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Old 11-05-2007, 08:49 AM
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How long ago were the intake manifold gaskets changed?

tom
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Old 11-05-2007, 08:51 AM
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No clue

I really have no idea
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Old 11-05-2007, 09:18 AM
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How long have you owned the truck?

tom
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Old 11-05-2007, 09:43 AM
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10 months

I have been waiting for winter to get here to put it in the mud but i cant with it knocking. The motor was supposedly change about 50k ago and trans about 12k ago is there a possibility that it could be the torque converter
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