I tried to check the timing on my 69 396. The initial timing was 34 degrees. Figuring that it would not start or run with that timing, I assumed the distributor may be one gear off. So I checked to see if the distributor was really at #1 position at #1 TDC of cylinder #1 by removing valve cover and finding the real TDC.
It is at TDC.
Does this seem possible? With that much advance I would think th eengine would be impossible to start and run. It would also detonate severely. I have niether problem.
What I do have is <12" vacuum at idle, lopey idle (assume from cam?) and very rich carb (Holley 750 DP). I am fouling plugs <500 miles. I do have leaking valve guides but it didn't foul like this before I "fixed" it.
Before I put things back together and experiment with timing, does anybody have advice for a confused soul?
I did remove and plug the vac advance. The centrifugal advance seemed to work OK as timing increased as I increased RPM.
It also runs pretty well when not fouled.
69 SS396 Clone, B&M TH400, 12 Bolt Posi, Blue w/White Z28 Stripes
[This message has been edited by Joe G (edited 01-31-2001).]