When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
either the pin or the timing chain. yanker up outta there and have a look. it may not look spun as the remains of the pin will still be in the holes in the gear. Be aware that something made it strip, usually somethin has gone through the oil pump. When i used to install engines once in a while a bristle from a wire wheel would make it to the pump. only ever upset fords though. its a weak link.
if it seems to turn over too fast , and based on the mileage i would say its timing chain. If when you get it apart it has nylon gears and they are stripped its goin to require pulling the pan for a a good cleaning. I know it doesnt sound like fun but that stuff could potentially get to the oil pump and stop it. gl
Check the distributor first, if its ok then put a bar and socket ont he front of the crank and look down the hole see if the cam turns and move it back and forth to feel for slack.