Why do some cams have 4 degrees advance ground in? When they do, should I set it 4 retarded to make up for it?

 

[QUOTE=OkieDave;18873965]Why do some cams have 4 degrees advance ground in? When they do, should I set it 4 retarded to make up for it?[/QUOTE
The reason some cams have 4 degrees or 2 degrees advance ground into it is because the guy or company that speced the cam wanted valve timing events that way so don't retard it back to 0.

 

I have the same 4+ called Comp. it's ground into the cam dot to dot install. It is what it is ..

 

Leave it alone - at least until you try it out.