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Did you put a new crankshaft seal in the front of the timing cover ??

The timing cover could have a hole worn in the left bottom side of it from the old timing chain rubbing against it.

Are the front intake manifold gasket pushed out when you tighten the intake bolts.

If you used the rubber gaskets for the front and rear of the intake that came with the intake gasket set, Then they probley moved on you.

NEVER USE THE RUBBER GASKETS FOR THE FRONT AND REAR OF THE INTAKE.

use high tempture OEM black silacone on the front and rear of the block under the intake ONLY. That is a rule on a V8 Chevy

It could be leaking oil from the front oil pan gasket were the timing cover and oil pan go together. Hope this helps.

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12y ago
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Q: Why does my newly rebuilt 87 Chevy 305 leak oil out of front and spray it everywhere after a high rpm run and does not drip when idling or off?
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