I used to swap used 340 cams into 318's when I didn't know any better and used the lifters from the 318 after taking them out of a bucket. Never had a problem. Never knew about cam lube either but I did slather everything in STP.

Me in your position, I'm cleaning everything up good, putting the assembly lube to it and making sure ALL the lifters are spinning before I fire it. Fill it with Rotella 15/40, prime it, fire it and call it a day.

Kevin