It may be designed to take a 650 front wheel, a pursuit frame possibly. If you put it a longer fork it will make the head tube angle more relaxed, which if it has supper tight angles may not be a bad thing. The person before may have swapped out the front fork for a 650 for some reason so it maybe built for a 700cc. Post a picture so people can get an idea of what it looks like.
It may be designed to take a 650 front wheel, a pursuit frame possibly. If you put it a longer fork it will make the head tube angle more relaxed, which if it has supper tight angles may not be a bad thing. The person before may have swapped out the front fork for a 650 for some reason so it maybe built for a 700cc. Post a picture so people can get an idea of what it looks like.