As cast Tigers, anyone have numbers from their own testing
 

I will ask Frank for his results, but has anyone flowed their own set? late gen 1 Tigers, last version before tiger 2

Curious as well

Here is the information posted on the All Pontiac web page. The second set of numbers looks to be for bowl and chamber work only which should be pretty close to as cast.


http://www.allpontiac.com/online_cat...flow_large.gif

AS cast Tiger 1s were 415-425 cfm with chamber and bowl work.2.250-1,800 valves.Full CNC poert was 450-455 with 2.250 valve 462-465 with 2.300 valve..This head is very sensitive in the valve seat area.If done incorrectly can lose 15-20 cfm.Bill C.

thanks Bill. can you post or PM the ''factory valve job angles and margins" I am trying to get a used pair of late gen 1s, back up to original or better if possible. Frank had mentioned the angles were key as did you.