WTH? Distributor keeps getting loose SBC 350!

[Richard150MPH]

This is getting to be ridiculous.
For some reason the distributor clamp on my truck seems to lose its hold on the distributor.
Then I lose timing and have to reset it.
I have tried three different clamps with the same result.
The stud does not appear to be pulling out of the intake.
Suggestions?

 

[cheveslakr]

That sounds nuts. Having the thin gasket and spec'd shaft freeplay would be 2 things to look at. YoS can check freeplay by pulling the dist. and use a feeler gauge between the large shim and the gear, should be a min. of .011 and max of .015. Chevy was pretty crude with that. Shim kits are readily available. The large solid hold-downs are my preference , and always hated the .010 wire type.

 

[Richard150MPH]

About ready to drill and tap for a second hold down!

 

[Nashville Cat]

This is getting to be ridiculous.
For some reason the distributor clamp on my truck seems to lose its hold on the distributor.
Then I lose timing and have to reset it.
I have tried three different clamps with the same result.
The stud does not appear to be pulling out of the intake.
Suggestions?

Maybe a lockwasher over the clamp would keep it from rotating ?

 

[Shovelrick]

Since you have a stud have you tried a new flat washer, lock washer, & nut? maybe a dab of loctite on it, use to help keep my Shovelhead nuts & bolts clamped down

 

[cage2592]

Mine has both a stainless lock-washer and Nylock flange nut.