What are your thoughts on this. I'm rebuilding a 350 to put in my 58 GMC. The engine was inexpensive but I've had to install a new crank, the old one was to badly wiped to regrind, new camshaft and lifters. I guess I watch too much TV because I've in all my years I've never used a break in oil in the few engines I've rebuilt over the years. Watched those guys on Fast and Loud have to rebuild a rebuild because they didn't "use proper break in oil and procedures".
I'm not building a high hp engine. The cam that cam out of it was in the 458 lift range, which is what I've replaced it with, topped off with a holley 570 dual feed.
I've never been much on oil additives but what do you guys say. Do I add one of those bottles of extra stuff, I believe it's zinc, or not. I've rebuilt a few engines in the past they all survived. I value the wealth of knowledge here. Larry
Last edited by LarryW; 01/03/2014 2:43 PM.
