The subject of timing and the theory behind all this on what and where to set your engine for peak performance is all very fascinating, and I have received quite an education this last year with the knowledge I've gained from everyone here and by hands on tinkering with my car, which brings me to my question.
It seem like an average stock distributor has aprox 14 degrees of timing, an average vacuum can has aprox 14-16 degrees in it so why did the stock book setting say for a 66 BB show anywhere from 4 to 10 BTDC?
Lets say you went with book 10 initial, that gives you 24 total and a w/vacuum advance 38.
The general consensuses today is your total should be 34-36, and with vacuum advance, that would puts you in the 48-50 range. This put everyone's initial on the average in the 18-20 range to acheave these numbers.
So if these figures today that is generally accepted by everyone, why were the stock initial settings so low, or am I missing something here?
Rocky
It seem like an average stock distributor has aprox 14 degrees of timing, an average vacuum can has aprox 14-16 degrees in it so why did the stock book setting say for a 66 BB show anywhere from 4 to 10 BTDC?
Lets say you went with book 10 initial, that gives you 24 total and a w/vacuum advance 38.
The general consensuses today is your total should be 34-36, and with vacuum advance, that would puts you in the 48-50 range. This put everyone's initial on the average in the 18-20 range to acheave these numbers.
So if these figures today that is generally accepted by everyone, why were the stock initial settings so low, or am I missing something here?
Rocky
