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Can the oil pan be removed while the engine is in the car or is it easier to pull the motor and do it? I am helping a friend work on his and he wishes to replace the pan.
The oil pan can be removed without taking the engine out. On my 94 I removed the exhaust system from the cats back, the starter, oil filter adapter, and flywheel dust cover to provide the room needed to remove and replace the oil pan. The tricky part is the clearance between the front of the pan and the cross member. If you raise the engine about an inch, you will have more room to slip the front of the oil pan in. Also, you may need to rotate the engine so that the rod end caps do not interfere (raising the engine may help here).
Any way you look at it, it's a lot of work just to remove the oil pan.
This may not apply to your year but I've had the oil pan off my 86 a few times and I never had to drop the exhaust, jack the engine or even remove the starter.
I'm running a 6 quart GM pan too. In my case it wasn't hard at all and using a one piece oil pan gasket, re-installing the pan was a breeze.
I'll second that. I've had the pan off my '94 more times than I can remember and there is no need to drom any part of the exhaust or raise the engine. It's actually relatively easy. Don't forget to take out the low oil level sensor though.