Howard’s cam valve springs
AFAIK, there are a lot less issues with breaking in solid flat tappet cams as opposed to hydraulic flat tappets. There are still the basics to cover like ensuring the lifters rotate in the bores after installation by the rotationof the camshaft and proper oil and additives for flat tappets. Howards has a download of their 2016 catalog where you can see what springs they recommend and then spring specs in the corresponding sections. As stated, we can find you a set of springs that will work for minimum expense, but we’ll to need to know what type of heads and valves you’re using or have an installed height.