Ron B,
I asked this question some time back and I believe someone said they are threaded into the head, though I have yet to see for myself.

Hopefully someone else will chime in here to give more details.


Craig

My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.