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01-08
GM - 8.1L Workhorse
Ultimate RV Power System
Everything needed for dramatic power gains. Pass, merge, and climb effortlessly. Adds up to +70 hp and +92 lb-ft (rear wheel); optimizes mileage and durability.
Gains Up To:+70 hp/+92 lb-ft
PowerPack® System
Banks PowerPack features a revolutionary new Ram-Air intake system* that delivers greater airflow and air density for more power, plus an OttoMind Programmer (optional) for significantly improved response. A pair of stainless-steel, tuned-length TorqueTubes exhaust manifolds provide stunning torque output when you want it. Pass, merge and climb as you please: your PowerPacked coach won't break a sweat. Achieve best gains of +70 hp and +92 lb-ft torque at the rear wheels, with better fuel economy—and never require high octane.
Important: Some vehicle configurations require an extension kit for proper fit.
*Note: Banks Ram-Air intake system available for W-Series only
*Currently available for '01-05 models
Motorhome Power
Gasoline: GM 8.1L Workhorse, '01-06
Test vehicle: 2004 Workhorse W-22, GM 8.1L V-8
Transmission: 5-speed Allison
| PowerPack® System with OttoMind | Stock | Banks | Improvement | Results |
|---|---|---|---|---|
| Horsepower: Best gain (hp) | 222.2 @4200 rpm |
292.4 @4200 rpm |
+70.2 hp | 32% more |
| Horsepower: Peak-to-peak (hp) | 222.2 @4000 rpm |
292.4 @4200 rpm |
+70.2 hp | 32% more |
| Torque: Best gain (lb-ft) | 302.3 @3800 rpm |
394.6 @3800 rpm |
+92.3 lb-ft | 31% more |
| Torque: Peak-to-peak (lb-ft) | 314.2 @3400 rpm |
400.1 @3500 rpm< |
+85.9 lb-ft | 27% more |
| Acceleration, 0-60 mph Time (sec) | 23.08 | 18.72 | -4.36 sec | 19% quicker |
| Acceleration, 0-60 mph Distance (ft) | 1,252 | 1,001 | -251 ft | 20% less |
| Acceleration, 40-60 mph Time (sec) | 11.12 | 8.84 | -2.28 sec | 21% quicker |
| Acceleration, 40-60 mph Distance (ft) | 831 | 658 | -173 ft | 21% less |
| Maximum speed, hill-climb (mph) 6% grade | 57 (3rd Gear) |
67 (4th Gear) |
+10 mph | 18% faster |
| Fuel Economy (mpg) 55-MPH, 7% grade | 2.68 | 3.26 | +0.58 mpg | 22% better |
| Fuel Economy (mpg) 70-MPH, 0% grade | 7.19 | 7.78 | +0.59 mpg | 8% better |
System Includes:
 |
Banks Ram-Air® Intake system
|
 |
OttoMind Programmer
|
 |
TorqueTubes® Manifold Assembly
|
| Application | Year Range | Part # |
|---|---|---|
| PowerPack System P-series chassis | GM 4-speed trans | EGR-equipped | Driver-side tailpipe exit | 2001-03 | 49554 |
| PowerPack System P-series chassis | GM 4-speed trans | No EGR | Driver-side tailpipe exit | 2004 | 49556 |
| PowerPack System W-series chassis | Allison 5-speed trans | EGR-equipped | Driver-side tailpipe exit | 2001-03 | 49558 |
| PowerPack System W-series chassis | Allison 5-speed trans | EGR-equipped | Passenger-side tailpipe exit | 2001-03 | 49559 |
| PowerPack System W-series chassis | Allison 5-speed trans | No EGR | Driver-side tailpipe exit | 2004-08 | 49560 |
| PowerPack System W-series chassis | Allison 5-speed trans | No EGR | Passenger-side tailpipe exit | 2004-08 | 49561 |
| PowerPack System W-24 chassis | Allison push-button trans | No EGR | Driver-side tailpipe exit | 2005-08 | 49562 |
| PowerPack System W-24 chassis | Allison push-button trans | No EGR | Passenger-side tailpipe exit | 2005-08 | 49563 |
| PowerPack System w/OttoMind P-series chassis | GM 4-speed trans | EGR-equipped | Driver-side tailpipe exit | 2001-03 | 49571 |
| PowerPack System w/OttoMind P-series chassis | GM 4-speed trans | No EGR | Driver-side tailpipe exit | 2004 | 49572 |
| PowerPack System w/OttoMind W-series chassis | Allison 5-speed trans | EGR-equipped | Driver-side tailpipe exit | 2001-02 | 49573 |
| PowerPack System w/OttoMind W-series chassis | Allison 5-speed trans | EGR-equipped | Passenger-side tailpipe exit | 2001-02 | 49574 |
| PowerPack System w/OttoMind W-series chassis | Allison 5-speed trans | EGR-equipped | Driver-side tailpipe exit | 2001-03 | 49575 |
| PowerPack System w/OttoMind W-series chassis | Allison 5-speed trans | EGR-equipped | Passenger-side tailpipe exit | 2001-03 | 49576 |
| PowerPack System w/OttoMind W-series chassis | Allison 5-speed trans | No EGR | Driver-side tailpipe exit | 2004-07 | 49577 |
| PowerPack System w/OttoMind W-series chassis | Allison 5-speed trans | No EGR | Passenger-side tailpipe exit | 2004-07 | 49578 |
| PowerPack System w/OttoMind W-24 chassis | Allison push-button trans | No EGR | Driver-side tailpipe exit | 2005-07 | 49579 |
| PowerPack System w/OttoMind W-24 chassis | Allison push-button trans | No EGR | Passenger-side tailpipe exit | 2005-07 | 49580 |
| Exhaust extension kit Exhaust extension kit | P-series | 190" wheelbase | 2001-04 | 53681 |
| Exhaust extension kit Exhaust extension kit | P-series | 208" wheelbase | 2001-04 | 53682 |
Owners Manual(s)
| Exhaust Extension Kit 2005 (Class-A, Workhorse chassis, W-series) (Part #96428) |
 Download |
| Stinger & PowerPack systems (00-07) (Part #96431) Class-A, Workhorse chassis, W-series |
Download |
| Stinger & PowerPack systems (Class-A, Workhorse chassis, P-series) (Part #96432) | Download |
| Stinger & PowerPack systems (Class-A, W-24 chassis, 2005 & Later) (Part #96438) | Download |
RV Today features Banks
It's an old episode but what Gale explains about the principles of improving the performance in your RV still applies today.
Accolades
“Looking to take your turbodiesel’s performance to the next level? Look no further than Gale Banks Engineering. ”
AutoWeek (May '05)