Harris Speed Works
Late-model power-adder specialists Harris Speed Works carries a full line of engine and nitrous management systems, along with custom accessories. Colored Teflon hoses, switches, and progressive nitrous controllers are just the tip of the iceberg for HSW. The Cold Fusion line of nitrous kits was designed by the evil minds at HSW to bring you high-quality and big value nitrous systems. The single-nozzle LT1/LS1 kit uses a single wet nozzle for up to 200 hp, while the dual-nozzle setup has the capability to double the horsepower. However, if you plan to use that much nitrous you would most likely be better off with one HSW's direct port kits. Plumbing and installation are also available upon request if you happen to live in the Philadelphia area or are up for a drive.
Company: Harris Speed Works
Applications: LT1/LS1
Type: Wet
Base Kit: 10-pound bottle, bottle brackets, nitrous solenoid, fuel solenoid, eight jets (100, 125, 175, 200hp), two 12-inch stainless steel-braided hoses, 15-foot braided hose (bottle to solenoid), one Pro Fogger nozzle, one nozzle hold fitting, 4AN bottle nut, wide open throttle switch, 20-inch stainless-braided hose (Schrader valve to fuel solenoid), fuel-line adapter fitting, nitrous pressure gauge, dual-solenoid mounting bracket, screws, solenoid fitting (to attach fogger), two solenoid fittings (bottle to solenoid and solenoid to fogger), 12-volt 40-amp relay with plug-in harness, arming switch, 15-foot 12-gauge wire, electrical connectors
Power Range: 100-200 hp
Price: $439.99
Other Kits: LT1/LS1 Dual Nozzle Wet Upgrade (up to 400 hp), Corvette Dual Nozzle Wet kit, Universal four- to eight-cylinder wet and dry kit, Universal six- and eight-cylinder direct-port EFI kit
Nitro Dave's Nitrous Outlet
Nitro Dave has been known throughout Texas for over four years as a supplier of racing fuel, nitrous, and fuel accessories. His reputation in the F-body community led to a successful ownership of a speed shop, however, in 2004, Dave sold the business to concentrate on becoming the top nitrous supplier in the country. As a supplier of Nitrous Express and other manufacturers, Nitro Dave assembles his own brand of nitrous kits using the best materials from each. The LS1 F-body Halo Kit, however, uses a unique circular spray-bar fogger system for a more even distribution, which mounts inside the air lid. More traditional single- and dual-nozzle dry kits are also available for LS1s in addition to Dave's famous custom kits. The hidden system is notorious among the street-racing community and features spray bars plumbed inside the intake for a completely undetectable install. Though, the big-time players opt for direct-port systems. Nitro Dave prides himself on building some of the cleanest and sexiest direct-port systems on the market, using polished fuel rails, braided lines, and billet rail brackets. All systems carry a lifetime warranty on the solenoids.
Company: Nitro Dave's Nitrous Outlet
Applications: LS1 F-body
Type: Dry
Base Kit: 10-pounds bottle with 45-degree valve, quick-release stainless steel bottle brackets, 20-foot main feed line, nitrous solenoid, 2-foot -3 hose, jets, halo spray bar, micro switch and bracket, -4 bottle nipple and nut, wiring harness and relay, electrical connectors and wiring, NHRA blow-off valve and blow-down tube, fuel-pressure safety switch, liquid nitrous pressure gauge
Power Range: 40-80 rwhp
Price: $499
Other Kits: LS1 single and dual dry-nozzle kit (25-150 rwhp), Universal EFI wet kit (35-150 rwhp), Custom Hidden Kit (35-300 rwhp), Custom Direct Port
Nitrous Express
Most famous for its innovative Vortech nozzle design, which can be accredited to many ET and mph records since the '80s, Nitrous Express has continued to invest in new designs, such as the mass air-housing kits for LS1, LT1, and now LS2s. By affixing NX's billet aluminum plate to the MAF sensor housing, more seamless packaging is achieved. NX is also known for using excellent quality components, providing an extensive instruction manual backed by top-notch customer support, and for providing some of the most complete kits on the market.
Company: Nitrous Express
Applications: LT1/LS1
Type: Wet
Base Kit: 10-pound bottle, D-4 nickel-plated brass bottle nipple and bottle nut, steel bottle brackets, D-4 steel-braided 16-foot feed line, Stage 1 nitrous and fuel solenoids, two MAF housing ends, D-3 steel-braided 24-inch fuel line, D-3 steel-braided 24-inch nitrous line, D-4 steel-braided 18-inch fuel line, two solenoid brackets, electronic TPAS throttle position switch, 40-amp relay and wiring harness, toggle switch with bezel, 1/8 and 1/4-inch D-4 nickel-plated brass fitting and two 1/8-inch D-3 fittings, two D-3 female 90-degree jet fittings, wire connectors, two 7-foot wires, brass jets, full-color installation manual
Power Range: 50-150 hp
Price: $905
Other Kits: C6 Corvette MAF Kit (35-200 hp), Universal Hitman EFI Wet Kit (50-75 hp); GM EFI Race, Dual Nozzle, TBI, GM EFI Dual Stage, Custom EFI Stage 1 and GM EFI Stage 1 wet kits (35-150 hp)