I just never had any luck with 360's . Melted many pistons with a stock bottom end. Never had any that impressed me when it came to endurance. Smaller mains , Externally balanced, junk pistons, small main caps like 318 but longer stroke, That never made any sense, I would rather build a 318 then a 360. I had 408's and 416's World of difference . This is just my opinion . A stock 340 does not compare to a 360 in any vehicle. Everything is stronger in a 340 and easier to intermix with a 318 drive line. Let me know how easy it is to find a 360 flywheel or a good balanced damper for replacement in a truck or car with a 360.