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Re: Waking up the ZZ
It's all about total timing.
If you run at the 10 degrees initial that the gm guys suggest, then 22 degrees in the dizzy is needed to arrive at the recommended 32 degrees all in by 3000 rpm.
Those specs are specified for warranty purposes. You won't hurt your motor and gm has no warranty issues to contend with.
You can run it like that, but it'll be rich running at idle, have a high idle in park and deisel when you shut it off.
The reality is you need way more initial. Likely 20 degrees. Then you adjust your mechanical timing to 12 degrees and add 10 more from your vac pot.
Your total's the same but it idles nice on the idle circuit, hauls butt when you stomp on it and doesn't idle high in park or deisel.
It's your choice.
Worry about the warranty and have a foul smelling, sputtering, diesiling embaressment at the local cruise- in or tune it right and enjoy all the benefits of a well tuned power plant.
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