what kind of flexplate is this
 

flexplate on my 406 smallblock
single or dual bolt pattern?
5.75 from crank center to bolt center.
using a th350
looking for a converter that would fit in the 2400 stall range.
any recommendations?
http://webpages.charter.net/harrycoo...%20(Large).JPG

single pattern, and try B&m for the converter.

single pattern are you sure?
the old converter only mounted to 3 of the six holes?

yeah all the holes are equal length apart. you can use any of the holes it doesnt matter. Ive never seen a converter that uses more than 3 holes.

all the holes are not spaced equally apart?
from the crank center one group measures 5.25
other group measures 5.75 from crank center?
Not trying to be a pita
just wanna get the right converter the first time.

really?, well to tell you the truth every flexplate ive ever had has had all 6 holes just like yours and ive never had a problem when i purchased a converter. they have always fit.