anti freeze

Hi guys a little help please. I've got a '67 Camaro with a 350 and Brodix heads, I'm going to store it for the winter but am not sure what kind of antifreeze to use. i need to protect it to 40 below, I live in Minnesota.
Any help would be appreciated.
thanks
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.