Does the LS1 use the same size bolt all the way around or a bigger bolt in the corners like the LT1 and Gen I SBC? I need to know how many the LS1 oil pan uses and what the measurements are so I can go buy some bolts from a dealer or something. I dont wanna get them from GM and dont know if any shops will have them. If someone could provide me with this information it would be really appreciated. Also maybe the part number for the bolt.

alright, got the part number and found the short bolts, part number was 12554990 but as far as the other bolts, they said they are long, not sure how many I need but does anyone know the measurements on the long ones and if you have some, i need them. I prob have the long ones but I need to know the size.I have 2 really long skinny bolts, would that be them? Part number is 11515758

found some small ones, im sure i have the big ones, just wondering what the measurements are.

I don't know the measurements but those 2 long skinny ones are the back 2 and all the rest are the same.