67' Barracuda 273 (Camshaft Results at the Track)
When i was 16-17 years old I had two different 273's in a 66' Dart, at the time I had an automatic and modest gears (and budget) but both engines ran great and took a pounding. Although mine only went low 15's, it was still alot of fun and I plan to build a 273 again in the near future for one of my A-body stick shift cars to do some local bracket racing.
3.63 Bore with a 3.31 stroke, and a 6.123 rod makes a real small block, but really its gotta have solid lifters!