Fits Holley 4150 and Carter AFB (late), 200-500 HP, includes Black 10 lb Bottle

Part Number: 02301BNOS

NOS Pro Two-Stage wet nitrous system gives you a moderate shot of nitrous at the line to get a solid start. Then, a second stage of nitrous gives you serious muscle through mid-track and the top end. This system is adjustable from 200-500 horsepower and uses a special dual stage plate design for excellent nitrous flow, fuel atomization and mixture distribution. Our Big Shot style Pro Two-Stage plate utilizes 4 unique spray bars equipped with tiny orifices precisely located to efficiently dispense a powerful nitrous/gasoline mixture for unbelievable horsepower gains.

Features and Benefits

• Includes 4150-flange 1” thick dual stage black aluminum plate with 4 spray bars
• Offers steady and precise nitrous flow, fuel atomization, and mixture distribution
• Includes jetting for 200, 250, 300, 370, 420 & 500 horsepower
• Includes 2 Cheater Fuel and 2 Cheater Nitrous solenoids
• Bottle is made from 6061-T6 Aluminum
• Includes 10 lb. black nitrous bottle with brackets
• Includes mounting hardware and instructions

To supply the proper amount of fuel to the carburetor and the Big Shot System, a fuel pump must be used that is designed to operate between 4.5 and 7 psi, with a flow rate of 0.1 gallons per horsepower at 6 psi. For example, an engine that produces 350 horsepower when the Big Shot System is activated will require a fuel pump that flows at least 35 gallons per hour at 6 psi.