[Aaron91RS]

On my 93 blazer the timing tab has three teeth and then a little cylider. Are you supposed to be able to look through the cylinder and if the mark is under it thats 0* or stock?
Then how many degrees are between the point of each tooth.
I'm guess 4* from point to point if its like a regular old chevy.
So I have it on the first tooth so it 4* advance? Or is that cylinder thing not 0*?

 

[Aaron91RS]

ttt

 

[meeh350]

cylinder thing isn't zero, basically the first lowest spot is 0..... half way between that low and the first high(4) is 2 and then the next low is 6 and the next high is 8 and so on

the first "incline" is deeper than the others hence the 2 being in teh middle

i ussually run 2 degrees with pretty good results