Guys the thing to remember here is this engine had these caps on already when it was line bored. They fit then and they should fit now. Leave the file were it belongs, in the tool box. Chamfer maybe, side of cap absolutely not. If they needed it the machine shop would have done it before the line bore


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time