sounds like the same problem i had. i decided to yank my motor and just build a whole new one, but u could just replace the bearing which might be cheaper. i just thought new would be better, then a old block and internals which was beat before i bought it. when i found out my bearing were going i drove the old motor pretty hard to see what it could take. i put a heavier oil to help from thining out when it got hot. when it started getting bad it would tick and smell, no to mention the slight oil leak. i drove it about 3 months till i found a beater to drive while i put the new motor in. hope that helps
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89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims
MY89GT