Help on 408 build

Use an online compression calculator like the one at summit and plug numbers in during the planning stage of the build. Take measurements after you pull your heads, see if your pistons are below, zero, or above deck, check gasket thickness and check the chamber volume. Plug all the numbers in to see what you are showing now. Check your heads and springs for maximum lift and piston to valve clearance before choosing a cam. Is it a four speed or automatic car? If automatic, converter choice plays a huge role in cam selection, too. I was also wanting to ask out of morbid curiousty how hot is that joker running? If you have access to race gas, I’d try it just to see if the power comes up where it’s supposed to be and see if the tune is part of the problem.