where does it need to be set at? and how do you set it (mathamaticaly)?
thanks joe

 

Here is a helpful link: http://www.go-fast.org/z28/pinionangle.html

 

Try a search, its been posted many times

 

I ve tried the method that consist to take the measure diffrence between the
ds and the ta.It was good but not perfect.

You your engine is always(99%) of the time leaning down.So you need to take this in consideration.Since you transmission his connected straight to the engine its also leaning down.

So here is the link:

http://www.streetissuecustoms.com/pinionangle.html