ATK High Performance Engines offers the highest horsepower 351 Windsor crate engine on our list, it's also the most expensive at $7,163.00.The ATK HP11C 385HP is a complete 351W engine from the ...

After some intense research sessions and debates, team engine builder Steve Schlingmann decided on a 408 Windsor combination. The goal: 500-plus horsepower and 500-plus lb-ft of torque on pump gas.