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92 Suburban Low Oil Pressure/Engine Power

I have a 1992 C1500 Suburban (4x2) with a 350 TBI engine. Has about

250k miles on it but well maintained. 3 year old tranny.

My Question:

Been having cooling problems. Found out radiator was plugged and over

50% was not flowing. Bottom half of rad was COLD while the top half would burn you. Replaced the rad. NO evidence of blown head gasket. Oil looks good, coolant looks good. No knocks or pings.

After about 30 minutes of driving, the oil pressure drops to almost dangerous levels and there is a significant loss of engine power. Where the truck could make a hill with 20% throttle in OverDrive it would now take 50% throttle in 3rd gear if hot. MIL is not on. Any ideas?

Reply to
FR9940AOD5
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maybe it is still over heating. if the heat gauge goes over more than

3/8th of the way then its too hot. try a new thermostat
Reply to
boxing

Who are you talking to?

Any most gauges I've seen are designed for normal operation at exactly the

1/2 mark.
Reply to
Noozer

REal gauges have numbers on them.

Sadly most cars don't have real gauges.

nate

Reply to
Nate Nagel

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