I am a new owner of a 1972 Chevelle.
I tried to search my vin to see if it is a SS and I keep getting it needs more characters, can someone help please?
Here is what I have: 1C37F21554746
Welcome to team Chevelle Shirley. The F in your vin designates that the car originally had a 307 cubic inch engine. That would exclude it from being a SS with the Z15 option. The link below is from Chevellestuff which has a ton of information on your car.
The "C" denotes a base series Chevelle, which also excludes it from being an SS. It should also have exposed wipers instead of the hidden wipers. On the bright side, your car could be a Heavy Chevy. Does it have the domed hood?
One other thing, the 7th character in your v.i.n. is a "1" so the car was built in Canada, and as such can be documented as to how it left the factory by Vintage Vehicle Services. I leave it up to you to decide whether the VVS information package is worth the cost to you.