318 race engine 4104230-318 any info. on these engines?

the X block used the same casting number as the 318...the X block was only sold from the factory...never put in any production engines...the X block also come with 3.91 bore from the factory...

the X block has a BIG X cast into the front of the motor just above where the dip stick tube would be...

so if you dont have the Big X...you have a production 318

http://www.forabodiesonly.com/mopar/showthread.php?t=95965

see link for picture