I'm building an s4 TII motor to go into my 85 GSL. I have what I thought was a 12a oil pan. I believe its an N304-10-700 (federal, Canada) oil pan GSL SE. I ordered an N305-10-700a (california spec) oil pan for 85 GSL-SE. And the only difference is the n305 oil pan has no oil temp sensor near the level sensor. (which I now know is because cali spec cars never came with sub zero starting assist.)

I thought my pan was a 12a pan and my question is whats the difference in length between a 12a pan and an SE pan? Should be what about an inch?

 

Yeah, the 13b housings are 10mm larger than a 12a, so 20mm total length which is just under an inch.
I don't have a SE pan free, otherwise I'd measure it and give you the overall length, that will tell you which one you have for sure..

 

Isn't it about 20mm?

82transam beat me to it.

 

Yeah the pan I have and the brand new one are the exact same length. I've figured it out, the new one is an n305 california spec and the one I have is a n304 federal, Canada spec. Both gsl-se pans. I thought it was a 12a pan because my buddy thought it was he just pulled it off the shelf and gave it to me and I totally forgot that 12as are smaller lol.

I've got it cleared up though. Brand new SE pan was only 90 dollars my cost