No, looks like a 69 or early 70 400 square barrel w/the round clutch case.
The 501s all had straight finned (not staggered) heads if I am not mistaken.
Al
28J
--- In MAICOMOTORCYCLES@yahoogroups.com, "kawtriple" <kawtriple@...> wrote:
>
> From Washougal 2008. Is this a 501?
>
> http://www.motocentre.biz/motocentre-W8-3.htm
>