I wouldn't hesitate to own a '79 FLH (or any of AMF year bikes). Yes, at the time they had some troubles, but all that would have been sorted out on the bike by now. The shovelhead is a good strong motor. Not quite as easy to maintain as a new Harley or the Evo powered Harley that followed the Shovelhead in the mid 80's, but still they can be very reliable with the right person working the wrenches.
If you want to go this route, you'll be happiest if you are a mechanic with reasonably advanced skills. The reason is that it will be harder to find a shop that will work on a Harley of this age. Some shops will take in the work when they really aren't qualified to do so. This can be troublesome. I simply prefer to do all the work I can on my own and closely supervise any machine shop work I have to farm out.
There is a lot of folklore surrounding the AMF years. Yes, AMF was a company better known for making bowling balls. But AMF stands for American Machine and Foundary. They had been doing heavy foundary type work for years for Harley-Davidson before they bought the company. When Harley was struggling in the late 60's, AMF thought it might be better to invest in the company than see it go under and lose their business. AMF had been casting Harley motor cases, heads and transmission cases for years before they bought the company. When AMF bought Harley, they came in and shook things up. They started introducing modern manufacturing processes and this really annoyed the workforce. They did not shutdown plants and move the manufacturing, they simply came in and tried to modernize. They introduced huge improvements to Harley-Davidson motorcycles. Disc brakes, electronic ignition, wider use of electric starting systems, improved suspensions, and better charging/electrical systems just to name a few. I actually credit AMF with saving the company. AMF developed the Evolution motor that was used after the shovelhead years. The Evo motor didn't roll out until AMF has sold the company back to the employees. But make no mistake, AMF developed that motor and it's reliability and power improvements put Harley-Davidson back on the map. A lot of people still like to complain about the AMF bikes, but the problems were largely superficial and not serious design issues.
You don't really mention what you are looking for. But if you are looking for a low maintenance, "never have to work on it" sort of bike, you might want to steer clear. But if you go into it knowing that this is a 35 year old bike and you are willing to put up with a bit of baggage that goes along with that, it could be very satisfying.
A great technical forum for HD is: www.harleytechtalk.org
-Craig
⚠️ Last edited by caschnd1 on UTC; edited 3 times