Fleetside Lowboy
I am a big fan of stroker motors and have built a 496 for my 56 the advantage you have with the truck block building a stroker BB Chevy is the extra .4" deck height will allow you to use longer rods with strokes over 4.24 and IMO you should always use the longest rod possible.
The longer rods will help decrees piston side loading it also gives better dwell time that the piston spend at TDC and BDC witch will allow .5 to a full point higher compression ratio be used on the same fuel.
The longer the stroke not only increases the cubes of the motor too build more HP it is also like putting a cheater pipe on a wrench it gives a leverage advantage for more torque.
Here is a link to a thread on the Garage Insider where a guy was asking the same question.
http://www.garageinsider.com/f/comments.php?DiscussionID=44&page=1#Item_5
