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Question about mechanical advance

  • Thread starter Thread starter DJCarbine
  • Start date Start date Jul 14, 2006
D

DJCarbine

New Member
May 4, 2005
392
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Jul 14, 2006
#1
  • Jul 14, 2006
  • #1
I recently rebuilt my distributor in my 66 C-code 289, and noticed that my advance arms were a little different from what I have usually seen. Instead of the more common 10L and 15L arms, I saw that mine were 13L and 18L, allowing for more advance than usual. I had only seen and heard of the 10L and 15L arms untill now.

Is this of any significance? An uncommon find?


Well, I thought it was cool
 

rbohm

Founding Member
Apr 12, 2002
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tucson,az
Jul 15, 2006
#2
  • Jul 15, 2006
  • #2
you have a somewhat rare piece, but not that rare. at 10 degrees initial timing, you would get 36 or 46 degrees total timing depending on which groove you use. i would use the 13L opening for the street.
 
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