67 twin turbo dart

[AUSA66]

Could it be working the bolt side to side in the load unload cycle there doesn't appears to be a lot of surface area on the retainer post

 

[Matts440]

Pardon my ignorance, I've only dealt with B/RB engines. Why is there a hole in the head of the bolt that goes down the shaft? The allen headed bolts that I'm use to only have a hole in the head part. With all the material missing in the shaft of the bolt it will be weaker than a bolt with no hole.


View attachment 1716492088

Those pieces are for the shaft mount they came up with instead of a stud mount like a Chevy for the magnum heads so it links the rocker arms together per cylinder

 

[Matts440]

Here's what they look like and where those go