New 5.5:1 Cylinder Head Availability

[BButturff]

Originally Posted by Jim/GA

I recommend the 5.5 over the 6.0 head for the average driver with average original engine. It is very easy to get engine knock with the 6.0 head, and then your bearings will go south.

I have heard or read this exact thing before. Although my engine was rebuilt fairly recently I don't know if it still has babbitt bearings or if it has been converted to insert bearings. Unfortunately, the family of the previous owner was no help in answering this question. My engine starts, idles and runs very well so I'm not yet willing to open it up just to find out.