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Discussion Starter #1
Just wondering if some one has information, or preferrebly a schematic of the timing curve for a stock HEI, Hei distributor is out of a 1978, it is installed in a 1966 Chevelle 396SS.
Any help would be much appreciated.
 

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Race it, Don't rice it!
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The timing is dtermined from head effiency. Not the type of distributer.

SBC usualy like to start at about 12-16 at idle and end with 36 at 3000.
 

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The curve will depend on the weights and springs, but the total centrifugal advance should be about 20 degrees. Vacuum advance will usually add about another 20. Static timing would be around 8-10 BTDC stock, but most can be advanced to about 14-16 without pinging.

Bruce
 

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Car? Truck? Who Cares
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I think there is information on this in my
79 chev truck manual, but as my manual is home
in SanAntonio, and I am freezing my hiney in Des Moines,
you might have to wait until I get home.

Travelling in the cold states til 12-8

Bryan
 

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Discussion Starter #6
Where gunna go get a good advance timing gun and make a graph of the curve ourselves...they had the initial set at 8 degrees... we tuned in the A/F
last night on the dyno, there is defently some more to be gained with some timing...
 
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