I have a zz502 in my 73. I have about 5500 miles on it so far. I find it
it is very streetable, so long as you don't mind a little rumble while it idles. I drove it to work today, and I will be flying the stars and stripes tomorrow for sure! (see picture below) The fan shroud is a must too keep things cool on a 90F day.
My rear axle is a 3.08, and the transmission is a TH400. The rear tires are
265M50R15. Cruising at 60Mph runs the engine at 2900rpm.
Here's the url for the picture in case the above tags did not work.. (this is my first post here at CF)
http://www.marinopoulos.net/albums/7...te03.sized.jpg