331 Stroker. 3.250 Stroke. Great Torque gains over stock 302. Still streetable for cruising. Forged Pistons, Steel Beam Connecting Rods, Eagle Crank ect. Includes Complete plug n play Fuel Injection System. Includes Complete Wiring Harness, Sensors, ECU and Fuel Line Kit. Self Tuning without a Laptop is required. Will Replace most early and later model Small Block Ford Engines 289, 302 or 351w. Great Value.