Electronic Distributors From Rick Ehrenberg

Here it is in black and white the way I read this it is 26 CRANK degrees mechanical:

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I had it made as a duplicate of the 340 hi-po hi-po specs, definitely 2-stage springs, with a true street performance curve:
Less than 4 deg. mechanical adv. below 650 RPM (for cranking)
approx. 8-9 deg. at 950 (fast idle)
Approx 13 deg. at 2500 (HP)
Vacuum: near-zero at 10" vac
9-10 deg @ 15" (fuel economy / no oil dilution)
Note that these numbers are all DISTRIBUTOR degrees, double for crankshaft degrees.
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So now let's retire to the service manual library and go look up a 68, maybe '9 and even maybe '70 340 and see what Ma says

So here is 68 340 without CAP which would be CA only..........Again bear in mind CRANK degrees are double these figures



And here is the 70 340