Originally Posted by polyspheric
Some percentage of break-in problems are tappet bore misalignment. If your block has eaten a lobe before, this may not solve your problem.


I could actually see where that might exacerbate your break in problems. Almost like breaking a cam in and switching blocks and the lifter geometry is off compared to the first block.

67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174