The Predator Series 301cc is the smallest displacement of the "Big Block" family, similar to the 390/420. Some refer to it as the Medium Block. The 301 is growing in popularity due to its power and torque being a balance between speed and comfort. While it is heavier than a hopped-up 212, the block is much more durable, especially comparing similar power output. This is also great for heavier drivers that were more low-end torque for faster acceleration and hill-climbing power.