BOTH Oil Pan Bolt Part #'s Here!
There are 14 bolts on the oil pan:
-12x (Short Bolts: Oil pan to block AND oil pan to front cover)
Size: M8-1.25x30mm Bolts
GM Part #: 11515758
Torq Specs: 18 FOOT lbs.
which sell for a whopping $.43+shipping per quantity 10 on GM Parts Direct. Can't beat that. Took me 2 hours to find this part number... FML

-2x (Long, thin bolts: Oil Pan to Rear Cover)
Size: M6-1.0x135mm Bolts
GM Part #: 12554990
Torq Specs: 106 INCH lbs. (A lot of people overtorque these and break the bolt. Remember: INCH lbs.)
Price: $2.54+Shipping each on GM Parts Direct.
Torq Specs from: http://www.ls1howto.com/index.php?category=1
Well, I thought I'd share the fruits of my labor with all of you so you don't spend hours trying to find both these fricking part numbers and a lot more money than you shouldn't have to. Hope this helps some of you guys!
~Jeff
And if you notice, if you buy the 12554990 you automatically have to pay 12.95 shipping...for 2 bolts. The others are "free".
Screen shot of that also.

It is as simple as taking a few minutes to call up the sponsors on the site that sell GM parts and find out how much they are and get a decent quote on shipping and get the info you need. Plus we can sell the bolts individually. So no need to buy 20 of a bolt you only need 13 of.
I searched the depths of hell for those bolts being sold individually... Can I contact you about buying a few? 








