That isn't on mine. Mine is a '90 & '92 engine. It appears from your oil pan view, to be the hole for earlier engines with dipstick in timing cover. My oil pan is completely reversed as to uours with the deep part of the oil pan on the rear. The depth of your oil pan is larger in the front.

 

Thanks. This isnt my engine, its my buddy's 302. I recently rebuilt my 85 351w (rear sump pan with oil stick in the side of the pan) and have the same hole in the cover that I bought from the parts store. I currently and a rubber plug covering the hole but need to seal it better. My project is not on the road yet so I have time. Thanks again.

 

Front sump oil pan engines have the dipstick in the timeing housing, rear sump motors have either a pan mounted dip stick or a hole in the l/h side of the block between the last two exhaust ports.

 

You can use a small freeze plug to seal the hole, you should be able to find one that fits at a parts store.

 

It's for the oil stick tube however, if you seal it how are you going to check the oil? I see you have the front sump pan installed.

 

Re read post #3