YES THERE ARE GOOD CAMS FOR A SINGLE CAM MOTOR ! ! !
zex makes a pretty good cam and there is alwaya GUDE
here are my experiances with gude:
gude makes a very radical cam, i dont recomend getting just the stand alone cam, you should really look into getting their head package, (which is pretty much just a port and polished head and buffer valve train) i ran a gude head with my d16y8 for 3 years and had no problem what so ever, and when i needed to smog my car all i had to do was put my stock header and ecu and i was nice and smogable, even with my idle varying from 600-1000.
the gude cam gave me a redline of 9000 and a power band pulling around 4000-redline, anything below that was just shitty(a little prob had to do with my exhaust system and header choice) what really made the difference was the 9lbs flywheel that i put on, once i had that on there, in combo with the head package make the engine really float.
now that i think about it i really miss the smoothness of my sohc motor compared to the b18 that im running now
but you know what they say, you crave what you dont have.