This is a stock style setup, featuring a 3.850" stroke and bore sizes ranging from 4.390" to 4.440". Whether the kit is intended 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 and bore sizes ranging from 4.390" (502) to 4.440" (514). This kit is 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. Bore sizes range from 4.390" (521) to 4.440" (532), 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. Bore sizes range between 4.390" to 4.440".
