The ultimate guide for LS Cylinder Heads in POSTER form.  Nothing like this exists anywhere else, add one to your garage or shop wall.  

Includes:

• All 20 Cylinder Heads explained
  
• Heads are simplified into 8 similar code "families"
• Pros & Cons of each head family
• All 3 port types explained (cathedral, raised rectangle, rectangle)
  
• Valve sizes
• Chamber volumes
• Port volumes
• Flow rates for all heads (cubic feet per minute, or CFM)
• All 20 heads ranked on a scale from 1-5
• Reference sheets of all codes and specs

3 feet tall x 2 feet wide. 

Buy HERE