Buy Factory Direct: 800-601-8072
’04-06 Chevy/GMC 6.6L Duramax LLY
Total Sport Power System
- Intake, tuning & exhaust upgrades
- Massive power without massive heat
- Honors the host vehicle & improves longevity
- 12 truck lengths ahead of stock in ¼-mile
- Ready to shred!
Gains Up To:+124 hp/+303 lb-ft
Six-Gun® Bundle
No airflow gridlock.
Banks Six-Gun Bundle replaces the power-robbing factory airflow inefficiencies with free-flowing components that dramatically increase intake airflow and air density and expel exhaust with virtually no backpressure.
Power that keeps its cool.
Banks balances the improved airflow with advanced fuel tuning that delivers up to 54% more horsepower and 68% more torque than stock. This is tire-smoking, scenery-blurring power that keeps its cool. Six-Gun Bundle rockets you from 0-60 mph 24% quicker and 154 feet ahead of stock!
Live long & run strong.
Forget mismatched components. Run away from tuners that can destroy your engine. Everything in the Six-Gun Bundle is engineered to work together to maximize your engine’s power, efficiency and durability. Six-Gun Bundle honors your vehicle by safely living within the limits of your engine and powertrain. Your Duramax will run stronger and live longer!
All gains measured at the rear wheels. Please note: Palm Tungsten E2 sold separately.
Test vehicle: 2004 Chevrolet Silverado 2500, crew cab, long bed, single rear wheel
Engine: Duramax 6.6L LLY
Transmission: Allison 5-speed automatic
Horsepower and torque measured at rear wheels.
Note: Banks Horsepower and Torque tests performed with recommended airflow improvements
| Six-Gun, Level 6 with Speed-Loader or PDA | Stock | Banks | Improvement | Results |
|---|---|---|---|---|
| Rear-wheel Horsepower: Best gain |
229 hp |
353 hp |
+124 hp |
54% more |
| Rear-wheel Torque: Best gain |
445 lb-ft |
748 lb-ft @2000 rpm |
+303 lb-ft | 68% more |
| Rear-wheel Horsepower: Peak-to-peak |
246 hp @3000 rpm |
369 hp @3000 rpm |
+123 hp | 50% more |
| Rear-wheel Torque: Peak-to-peak |
449 lb-ft @1800 rpm |
748 lb-ft @2000 rpm |
+299 lb-ft | 67% more |
| Acceleration, time: 1⁄8 mile |
11.49 secs | 10.43 secs | -1.06 secs | 9% quicker |
| Acceleration, speed: 1⁄8 mile |
64.3 mph | 73.7 mph | +9.4 mph | 15% faster |
| Acceleration, time: 1⁄4 mile |
17.53 secs | 15.81 secs | -1.72 secs | 10% quicker |
| Acceleration, speed: 1⁄4 mile |
80.6 mph | 91.6 mph | +11.0 mph | 14% faster |
| Acceleration, time: 0-60 mph |
10.18 secs | 7.71 secs | -2.47 secs | 24% quicker |
| Acceleration, distance: 0-60 mph |
511 feet | 357 feet | -154 feet | 30% shorter |
| Six-Gun, Level 6 | Stock | Banks | Improvement | Results |
|---|---|---|---|---|
| Rear-wheel Horsepower: Best gain |
229 hp |
331 hp |
+102 hp |
45% more |
| Rear-wheel Torque: Best gain |
445 lb-ft |
720 lb-ft @2000 rpm |
+275 lb-ft | 62% more |
| Rear-wheel Horsepower: Peak-to-peak |
246 hp @3000 rpm |
346 hp @3000 rpm |
+100 hp | 41% more |
| Rear-wheel Torque: Peak-to-peak |
449 lb-ft @1800 rpm |
720 lb-ft @2000 rpm |
+271 lb-ft | 60% more |
| Acceleration, time: 1⁄8 mile |
11.49 secs | 10.66 secs | -0.83 secs | 7% quicker |
| Acceleration, speed: 1⁄8 mile |
64.3 mph | 73.3 mph | +9.0 mph | 14% faster |
| Acceleration, time: 1⁄4 mile |
17.53 secs | 16.06 secs | -1.47 secs | 8% quicker |
| Acceleration, speed: 1⁄4 mile |
80.6 mph | 91.2 mph | +10.6 mph | 13% faster |
| Acceleration, time: 0-60 mph |
10.18 secs | 8.00 secs | -2.18 secs | 21% quicker |
| Acceleration, distance: 0-60 mph |
511 feet | 363 feet | -148 feet | 29% shorter |
System Includes:
 |
Banks Ram-Air® Intake SystemFlowbench developed, dyno proven. Improves airflow up to 57%; adds up to +39 hp/+69 lb-ft more than a tuner alone! Enclosed cold-air box; huge 7-1/8" outlet. |
 |
Six-Gun® Diesel Tuner & PowerPDA® |
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Monster® Diesel Duals Exhaust4” stainless split-dual system more than doubles stock flow & cuts backpressure 98% for more power & lower EGTs; rich, throaty sound; huge polished tips; safely clears spare tire Or choose the single exhaust... |
 |
Monster® Exhaust4" stainless constant-diameter pipes and straight-thru muffler improve flow up to 176% and lower EGTs. Cuts backpressure up to 98%; rich, throaty sound. Of choose the dual exhaust... |
 |
Monster Muffler
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| Application | Year Range | Part # |
|---|---|---|
| Six-Gun Bundle, single exhaust LLY engine | Std cab, long bed |
2004-05 | 47731 |
| Six-Gun Bundle, single exhaust LLY engine | Ext/crew cab, short bed |
2004-05 | 47732 |
| Six-Gun Bundle, single exhaust LLY engine | Ext/crew cab, long bed |
2004-05 | 47733 |
| Six-Gun Bundle, with Diesel Duals LLY engine | Std cab, long bed |
2004-05 | 47734 |
| Six-Gun Bundle, with Diesel Duals LLY engine | Ext/crew cab, short bed |
2004-05 | 47735 |
| Six-Gun Bundle, with Diesel Duals LLY engine | Ext/crew cab, long bed |
2004-05 | 47736 |
Owners Manual(s)
LLY Six-Gun Bundle: The Porsche 944 Turbo Had Problems Keeping Up With Me
2005-07-10
Jon of Indian Springs, Ohio, installed a Six-Gun Bundle on an ’05 GMC Sierra Duramax LLY with a 6.6L turbo-diesel
Wow, Wow, Wow. Just put the Six-Gun Bundle in last night at my brother’s shop. Made some runs down a 1/4 mile street behind the shop. Wanted to make comparison on the newfound power so I ran the truck against a Porsche 944 Turbo that my brother was working on and I think I left him looking for some more power on the 944. He had some problems keeping up with me. This is the most impressive upgrade I have ever done on any of my vehicles. Thanks Banks for an excellent system.
Accolades
“The word "engineering" is very important here because Banks is not just reselling someone else’s products. They have full time in-house engineers and technicians, performing their own research and development on every different type of performance option you can imagine.”
— Toy Hauler (Dec '03)