Justin....tell your local parts boy that mike in tucson says that he looked up stupid in the dictionary and the parts boy's picture was there.

GM "Cylinder Case" is a bare block.
2 pc rear main 350 with 4 bolt mains is 10066034 and is about $630
This 350ci iron block is used on the 1973-85 GM Goodwrench 350 engine and has the early style 2-piece rear seal. Its main bearing caps are the straight type 4-bolt style. Can be used for 302, 327, 350, and 383ci engines.

1 pc rear main 350 is 10105123


mike in tucson