Ok guys, I grenaded a previously rebuilt 5.9l 360 last night at 3500 rpm pulling a 10k camper. Building a 408 stroker now for it. I am putting in a towing cam comp # cca 20-745-9 and I need to know what valve springs to use. I am using comp cams 1425-kit 1.6 roller rocker set as well.

 

Chat with Comp Cams, they should be able to recommend what you need. Just off the top of my head though, I would suggest valve springs/locks/retainers, and possibly even pushrods. Cheap insurance to replace the lifters, the Mopar Performance rollers are supposedly reasonably priced. (right around a hundred bucks new....)