Quote Originally Posted by Turbocharged400sbc View Post

it can leak oil AND/OR coolant internally or externally.

this was a ~75k late 04/early 05 L26...CLEAN motor... but as you can see...coolant was gonna be mixing with oil REAL soon...

I had one that looked like a rear main or pan gasket, ended up dropping the sub frame and trans. I wanted to be able to pin point the leak and be certain it was fixed. With the engine running it took a few minutes to start leaking. The top right corner by the trans dowl would spew and run down the side of the rear cover making it look like the rear main or pan was the problem.

I've got a vid on my phone of the leak with the engine running if I can figure a way to post it.

And if your buying a cammed engine or need to confirm what cam you have this is an easy way to check without tearing half the engine apart.