i have a 2002 drifter with 800 cc vulcan engine, have aftermarket pipes, hypercharger air cleaner, thinking of porting a jetting carbs, but found out i cant source parts to bore or stroke, so was told to just look into swapping for a bigger engine, so the question is can it fit the vulcan 1500 engine? i dont care if its carbed or FI (kinda like carbs tbh) but just need to know what will fit the frame
No, it won't fit. A 900 Vulcan might, though.
even with modifications the biggest i could go is the 900? what about other engines such as ones from indian or harley?
You can probably make anything fit, just depends on how much money and time you want to waste. As far as a direct replacement, you're limited, but fabrication of necessary parts calls for cubic money.