Originally Posted by v8hed
I posted that in a hurry just as I was leaving work. The 14* part was a typo. But, I recall setting a low initial, THEN locking the timing out and the lock out added a sensible amount. I'll run this test again to be sure. My point is, the total mechanical advance wasn't in the 50* range.
Just checked my balancer with a known good unit and it hasn't slipped.
Re. Vac advance, it's a stock can and was disconnected for the chassis dyno anyway.
If he took it up to 6000rpm and was not doing a WOT pass its possible the throttle plates weren't open enough to drop off all the vacuum in the manifold and the engine is still making vacuum and adding advance..... oops just read you said it wasn't hooked up my bad