Which Cam do you like?

the 318 block shares the same casting number as the factory X race block..but they are not the same....it has come up serveral times with owners of 318 blocks thinking they have a 4 bolt main block...

as noted above NO OEM blocks from the factory came with 4 block main...the TA blocks had thickers webs for 4 bolts ...but they too are 2 bolts main...