Originally Posted by
Simko
hey wrk.i was already on vitage cannondale site, i see most of the bikes had suntour and campy components, thats why i came on here.
ill keep digging
While Cannondale did use a lot of Suntour components, My 1987 T-600 was all Shimano (Deore and 600), and my SM-500 was almost all Shimano.
Your serial number will tell the year of the bike. If it doesn't match something in the catalog, check your date codes on the components (vintage Trek site will help you decipher them). I bet they were swapped out from another bike or an upgrade. Not unusual for a 25 year old bike to be swapped a few times.
McGreivey makes a great point below. May well have been bought just as a frameset and the original owner built it up from there. I don't recall any 105Shimano Cannondales from that era.