I put a small amount of RTV on the threads every single head bolt I install.
Ahah! So this could have scraped off the threads on install, and smeared UP the head bolts instead of dripping down the bolts.
I don't know about slants, but some SB have wet head bolt holes. I got into one HELL of a discussion about that on here years ago This is a 318LA I don't think any 340/360's have this issue
That is my thumb holding a flashlight, and the light you see is reflected back up from inside the block
View attachment 1715568826
AHAH, You may have one of Rusty's old motors.Ahah! So this could have scraped off the threads on install, and smeared UP the head bolts instead of dripping down the bolts.