Techco has designed some new pistons for their upcoming stroker motors, and we are excited to have them used in their first 397 stroker for my Challenger R/T. These particular pistons (below) are designed for a 8.5:1 compression, but several options are available depending on the requirements of your build. You will see in the pics below that the design is different than what has been used in Hemi engines thus far as Techco's pistons feature a reverse dome in the shape of the combustion chamber. All the Techco stroker motors will utilize these new pistons, and the design is only available in the Techco engines. Here are some more pics of the new piston compared to the factory piston: Pics of the new pistons and rotating assembly: Stay tuned to our build thread for more on what else is to come!
