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1967 Riviera Oil Pan Removal

The 55er

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Hello, I have a daily driver 1967 Riviera with a 430 engine and need to drop the oil pan to replace the leaky rear main crank seal. I've done this before on other cars but never on a Buick. It seems pretty straightforward after I remove the rear flywheel pan and starter and drop the steering linkage down. I will need to lift the front of the engine upward for clearance and the manual says to "raise engine by jacking under the crankcase pulley mounting". Where is this point exactly and where do I place the jack? How much will the engine have to be lifted? There's about an inch of clearance in there now between the frame crossmember & oil pan. Thanks for any help and suggestions. 


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