It's always tough to discuss this stuff on a forum. On one hand, you want to educate and inspire discussion, because that's what helps the reader to tie it all together.
On the other hand, discussing total timing with someone who cant gap spark plugs, is probably a waste and arguably, does more damage than good.
It's for this reason that there's simply no right or wrong way to do it.
After 35 years of working on Pontiacs, it wasnt until I came to this forum that I was able to effectively tie all of the fragments of my knowledge together. And to my point...
When I was younger, I believed that the difference between a 305 and a 307, was two cubic inches. And with that in mind, a 350 was much more powerful than a 327. But then one day I read an article about how Chevy created the 302, and that got me thinking... how could the 302 be more powerful than the 350?
It was that grain of sand that led me to realizing that you could make power equally, by either RPMs or torque... and that knowledge has changed the way that I now look at engines.
I'm sure a novice would think that a Chevy 327 and a Pontiac 326, both being GM engines, ere probably only named differently because of some corporate bs, however, now that you know what goes on, it teaches you to look a little further into the facts, and when you do, you find that the 326 is a torque motor, and the 327 is an RPM motor.
This thread doesnt strike me as an engine builders testing ground, so I wasnt tying to overdo it with details, but at the same time, if anyone in here reading this is inspired to dig deeper and provoked to match parts more carefully, then it's all worth noting.
It was a Car Craft article in 1994, that did it for me, and I only understand it now.
Start talking about cylinder pressure, and I'll be lost again.