cleaner air package
This is all before the major emphasis shifted toward knocking down the nitrous oxides ( the big ingrediant for smog).
edit: Here's the '68 mechanical advance curves for a 318 with and without CAP. The non-CAP 318 have higher initial timing. I'll post that up later
Makes sense. The needs of the engine for efficiency and power remain about the same. So with less initial timing, more advance is needed to get the same timing once the throttle is cracked open.
This is all before the major emphasis shifted toward knocking down the nitrous oxides ( the big ingrediant for smog).
edit: Here's the '68 mechanical advance curves for a 318 with and without CAP. The non-CAP 318 have higher initial timing. I'll post that up later
