This is a stock style setup, featuring a 3.850" stroke. Whether for stock replacement or racing, various levels of compression will allow for improved performance with emphasis on top-end power and high RPM.
This is a mild stroker setup, featuring a 4.150" stroke. Provides a good balance between top and bottom end power, making it ideal for many applications. Various levels of compression make these kits great for all types of setups - naturally aspirated or with power adders.
This is a bit more wild of a stroker setup, using a 4.300" stroke to produce even more displacement than the 502/514 combo. This configuration will be a bit more bottom-end heavy than the others, with less emphasis on top-end power. Great for applications where high RPM aren't as important, such as street/strip running either naturally aspirated or boosted applications, with compression ratios from low to high.
This is the most radical Ford Big Block stroker setup, using a long 4.500" stroke to produce a huge cubic inch displacement. Due to the long stroke this combo makes monster torque, although at the expense of top-end RPM. Regardless it is still a great setup for street applications where the RPM aren't extremely high to begin with. Applications from low to high compression, making them great for any configuration.