Absolutely...the O27 size is the smallest size car in O scale. Be aware that the O27 track has very shallow ties. Lionel O track has thicker ties.
The actual size of engines, rolling stock, etc., vary from 1/43 to 1/48. 1/48 is called "fine scale." Really and truly, actual O scale is that one inch on the model equals four feet in real (prototype) life. There are very few model railroad engines, cars, etc. that are actually and truly O scale size--the majority of stuff you see is undersized. WHY?
So it will fit easier into the average person's living space.
Hi John,
Thanks for the comeback.
Like I said I have a Lionel #731 freight set and I am not sure if this is O or O-27 Scale but the cars, especially the New Haven Box car that came with the set seems a bit larger than the K-Line Wood Sided Phoebe Snow Car, which has O-Gauge on it's box, that I purchased separately to add to the set.
Thanks Again,
John