Two per lug. It all depends what you're going to do with the sled. Trail riding on a 340, you might be ok with 1 per lug which will still help on icy trails. Or 1-2-1-2, etc. An old rule of thumb for trail riding is one stud per horsepower. Don't forget to get some good carbides on the skis. Good luck!
How many studs did you put on that sled? I am thinking about doing 97 Indy 340.
Two per lug. It all depends what you're going to do with the sled. Trail riding on a 340, you might be ok with 1 per lug which will still help on icy trails. Or 1-2-1-2, etc. An old rule of thumb for trail riding is one stud per horsepower. Don't forget to get some good carbides on the skis. Good luck!