1982 fxe softail:want to know if there is clearance in the frame to put in an evo 1340 and tranny,and if there is would i have to go chain or belt,looking at a rolling chassie and wanted to know what option i could go with.
Nope. An evo is taller than a shovel, you can make it fit, but not without stretching the frame. You would also need an adapter plate to put a 5 speed in that frame. Better to get a later fame or an older engine. JMHO, YMMV, etc.
I think we need to know more details of this project! What do you currently have as the starting point, if anything? Give us a helping hand.....photos.....