This engine was designed for IMCA A-MODS and UMP Type B-MOD Racing. They are great engines that make approximately 100-135 Horsepower over a 604 crate, depending on which cubic inch you choose. These engines are also light, we have to compete with the weight of the 604. The advantages of this engine are that were close on weight, BIG gain on power, and you crank it up to 7800.
UMP B-MOD guys, this makes a great engine for you as well. Runs great, super reliable, and its light!!