Page 19 of NOS Nitrous Systems by Holley Performance Products, Inc.

technical big shottm dual stage nitrous systems efi wet dry systems apply power in stages for better elapsed times not all race cars can benefit from getting an instant boost of up to 400 horsepower as is the case with the nosŪ big shottm single stage systems this is because the vehicle s tires and chassis may not be able to cope with the additional horsepower resulting in a severe loss of traction to provide for a more gradual application of power nosŪ offers highly effective big shottm dual stage systems these systems incorporate two sets of nitrous and fuel solenoids so that power can be added in two events the first stage allows the vehicle to leave the line with a moderate performance boost say 200 horsepower then when the tires are hooked up you can push the button for an additional 400 takeyour-breath-away ponies this first stage is activated by a throttle switch while the second stage is activated by pushing a button or optional precision delay timer 15838nos activation of the second stage automatically deactivates the first stage two cheatertm solenoids control the first stage while a super pro shottm nitrous solenoid and a high-output cheatertm fuel solenoid control the second stage a 10 lb nitrous bottle is standard optionally available are a wide variety of nosŪ electronic controllers these can be employed for example to activate the second stage while a nosŪ progressive nitrous controller can be used to actually dictate the amount of nitrous in percentages of total power potential and the timing actual performance gains will vary depending on the engine s condition configuration and jetting of nitrous system optional power jets are available for a variety of horsepower settings hidden systems horsepower adjustable 200-400 plate systems supercharger turbo systems direct port systems big shottm two stage systems p/n 02401nos 02402nos a,b,c a,b,c powersports systems application holley 4-bbl flange holley dominator flange solenoids jets a available with 15 lb bottle add -15 to part number ex xxxx-15nos b available with 20 lb bottle add -20 to part number ex xxxx-20nos c available with 5 lb bottle add -05 to part number ex xxxx-05nos note kits are available without bottle and bottle brackets add nb to part number ex xxxx-nbnos components accessories nitrous controllers electrical components big shottm to dual stage big shottm conversion p/n application 0023nos converts #02101nos 02102nos big shot kits to dual stage plates throttle bodies nozzles big shot systems are designed for use on engines that have been extensively modified and intended primarily for competition applications to supply the proper amount of fuel to the carburetor and big shottm system a fuel pump must be used that is designed to operate between 5 and 10 psi with a flow rate of at least 0.1 gallons per horsepower per hour at 6 psi high cylinder pressures are generated with the use of these kits and this greatly increases the load on the pistons rods crank and block use of high strength forged components splayed mains and a four-bolt block with cylinder head studs are highly recommended use only a high-quality racing ignition system with timing control intake manifolds that have an individual opening for each carburetor throttle bore should not be used open plenum single plane or tunnel ram manifolds work best racing gasoline is required system requirements distribution blocks fittings hoses tubing not legal for sale or use on pollution controlled motor vehicles in the usa fuel pumps regulators gauges recommended optional accessories nitrous pressure gauge see pg fuel pressure gauge see pg nitrous bottle heater see pg progressive nitrous controller see pg nos purge valve see pg 82 82 64 66 62 recommended optional accessories nitrous pressure gauge fuel pressure gauge nitrous bottle heater nos competition fuel system pump filter etc purge valve tools merchandising part index tech line 270-781-9741 1-800-99refill 35

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