06-27-2012, 08:55 AM
The question I have but haven't really found a answer to, did the blocks with a 10105123 part # come factory in any on the road vehicle? I have a friend that runs a crate late model dirt track car that is in need of a block. It has to be that exact part number. I have read that it's same past number as a crate zz4 and other roller bottom end blocks. I was just wondering if I could purchase this block anywhere besides new from gm performance.