Hot rodding the HEI distributor

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==Disclaimer==
 
==Disclaimer==
Because this article came from several authors besides myself, the statement of having about 50 degrees combined advance (initial, mechanical, and vacuum) at cruise rpm is a bit misleading IMHO. That's the max I would ever want to see, and personally speaking I use less- somewhere around 46 degrees combined advance would be perfectly acceptable in many cases.  
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Because this article came from several authors, the statement of having about 50 degrees combined advance (initial, mechanical, and vacuum) at cruise rpm can be a bit misleading. That's the max some tuners would ever want to see, and some recommend using less- somewhere around 46 degrees combined advance would be perfectly acceptable in many cases.  
  
But any way you slice it, it's still trial and retrial to get the curve dialed in. No matter what we do (short of digital control), the timing curve is always something of a compromise. And all engines and vehicles (and all the other considerations) are different, case to case. So don't be surprised if you end up w/a curve that is a bit different than what's presented in this article.
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But any way you slice it, it's still trial and retrial to get the curve dialed in. No matter what we do (short of digital control), the timing curve is always somewhat of a compromise, being as how all engines and vehicles (and all the other considerations) are different from case to case. So don't be surprised or alarmed if you end up with a curve that is different from what is presented in this article.
  
 
==Example of a "typical" performance ignition advance curve==
 
==Example of a "typical" performance ignition advance curve==

Revision as of 22:37, 7 December 2012

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