I suppose you could use something like a 240-250 @ .050 with a 110 or a 112 lobe seperation and a 3500 converter and it would work. As the stroke will eat up some of the duration.
In regards to this comment Bobby thats close to what i have in my combo and im close to getting it to the track. Mines a 256 @.50 108 lsa and a 3200 stall with 3.55 gears @ 3150lbs including driver.