Small Block Chevy

http://Mercedes-Benz.autoboardz.com/small-block-ID-make-minds-ftopict207798.html (small block ID I wish they'd make up there minds !)
I have a small block chevy motor .I am 99 % sure its an 1994 LT1 my question is why does the block have 327 in big letters on the side and 5.7L on the rear ??? correct me if I'm wrong or just mental but arn't LT1's 350cid & that = 5.7Liters

http://Mercedes-Benz.autoboardz.com/SB-Chevy-Loosening-Rocker-Arm-Nut-ftopict218521.html (SB Chevy Loosening Rocker Arm Nut)
Small block chevy 350, one of the rocker nuts comes loose on a regular basis and I have even bought brand new rocker nuts to try and fix the problem but it still comes loose. Can I "double nut" the rocker nut? (put 2 nuts on it which I believe would hold better) Or, should I install a new stud? ..
« Replace the studs (all of 'em) and the nuts (all of 'em). Don't 'double nut' this... Sometimes a double nut will allow pulling a stud, sometimes vicegrips, and always a stud puller works. Some part.. »

http://Mercedes-Benz.autoboardz.com/intake-ftopict224073.html (What is this intake)
I have a cast iron intake(small block chevy) that has the letter "S" on the front of it where the firing order normally is. I was told that people in the dirt track business use them. I am looking for more info on this intake, Can I please get some help. Thanks.

http://Mercedes-Benz.autoboardz.com/Edelbrock-Victor-Series-1711-Racing-Fuel-Pump-SBC-ftopict237054.html (FS: Edelbrock Victor Series #1711 Racing Fuel Pump for SBC)
FS: Edelbrock Victor Series #1711 Racing Fuel Pump for SBC This is a slightly used #1711 Edelbrock Victor Series Racing Fuel Pump for a small block Chevy. It retails for $78.95 at Summit. 130 GPH. 13-14 PSI. 1/2 NPT inlet & outlet. This was on a street rod I purchased. The racing pump's fuel press..

http://Mercedes-Benz.autoboardz.com/tall-short-valve-covers-small-block-chevy-ftopict237086.html (tall vs short valve covers for small block chevy)
Anyone know the height measurements for the old style small block chevy valve covers- tall style versus short style? One of my valve covers looks to be warped, it is leaking (I put in new gaskets, which didn't help), and I'm trying to figure out the best valve cover style to purchase. Terry M.