Timing?

[xgtracex]

How many degrees of timing are you supposed to run at full advance on a F camed 5.0? Car also has Edelbrock Victor Heads.

[dedpedal]

Keep turning it up a degree or two at a time till you hear detonation OR the car slows down. Then back it off 2 degrees and have fun. I ran 18 initial with my alum tfs heads. That was NA tho. A power adder is a different story.

[xgtracex]

I have my initial set at 14-15 degrees. But I read some where that at total advance the computer tops it out at 26-27 degrees. Is this true?

[Gearhead]

I have my initial set at 14-15 degrees. But I read some where that at total advance the computer tops it out at 26-27 degrees. Is this true?

I think the computer adds 26-27 degrees over your initial base timing. I once knew all that stuff, but I'm old and can't remember.....

These 2 tables might help. I believe they show how much timing the computer adds over your initial base timing.
It looks like the A9P is slightly more agressive than the A9L.

[Gearhead]

Here's some more info, add the degrees to your initial base timing:

WOT Spark Advance Comparison of A9L / A9P / X3Z

Here is how the WOT Spark Tables differ between X3Z, A9L, and A9P.

X3Z & A9L
RPM________0____1,000___1,800___2,150___2,600___ 3,500___5,000___
Degrees_____8_____8______18.5____21.5____22.5___ __22______25____

A9P
RPM_________0______1,600___2,250____2,600__ _3,500___5,000__
Degrees______18_____18______22______23____ __22______26___