How street able are these 340 stroker motors?

Another build - like Mich's - same build but 587 castings ported, another 10° of duration @ .050 in a hydraulic cam, and a Holley Avenger 870VS. In a 3800lbs E body and 3.23s it gets 17mph and runs 12.80s @ 109 in the 1/4.

The 4" stroke smallblock A body combo is the ultimate street combo IMO.