Oil drain plug stripped

[Alex]

Does anyone know the size and threads on the oil drain plug bolt for a 350? The person I bought my ‘91 rig from was servicing his oil changes at the local siphon club and they stripped the threads on the pan. They installed a generic plug that I want to get rid of, so I need to re-tap the threads in order to go back to OEM. Thanks in advance.

 

[Jay73K20]

When I striped mine I went with an oversize one that I bought at autozone. orignal is 1/2 20(fine thread, I might be wrong on 20, it might be 18) and oversized 9/16 18

 

[ramjet gmc]

i think they make a kit for this problem but i would use this as a reason to get a new BIG oilpan HEHEHE /forums/images/icons/smile.gif

 

[70~K5]

Or if not a oversize pan then one with the skid plate welded on the bottom for more strength.

 

[Seventy4Blazer]

FU(|< it, a big one with a skid plate. but i dont see how a person could put the oil pan on a 4x4 in to a rock without other problems to...
grant

 

[70~K5]

If you roll over a tree limb and your left tire rocks it up into your oil pan. Or you spit a rock up into your oil pan.

 

[4X4HIGH]

Go to your local parts store and ask them for a oversize drain plug. They come in a 1st oversize, 2nd oversize, and a 3rd oversize. Once you have used the 3rd oversize then you replace the oil pan.

 

[4X4HIGH]

Go to your local parts store and ask them for a oversize drain plug. They come in a 1st oversize, 2nd oversize, and a 3rd oversize. Once you have used the 3rd oversize then you replace the oil pan. These oversize drain plugs by the way are self tapping.