Here is my drama i had with blue printed crate engines.

https://board.moparts.org/ubbthreads/show...t=2#Post4808386

Also on top of this. I had a value spring break while i was idlig at a light. thank god i shut it done once i heard the rocker getting loose.

i brought the heads to my machinst too take a look.

All the guides were too big "worn"

Plus the valve springs were way too weak for the cam they put in.

The problem with blue-printed crate engines is that they didn't stand by their work.