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Sidewinder® Turbo System

Emissions compliant: CARB E.O. D-161-31PICKUP/SUBURBAN/BLAZER/JIMMY: In 1989, GM selected Banks as the 6.2L factory-turbo option, and remained so until GM released their own 6.5L turbo-diesel. To this day, Banks Sidewinder out-performs GM's 6.5L factory-turbo or any other turbo. Banks' ultimate upgrade for 6.2L workhorses provides best gains of +60 hp and +115 lb-ft torque, plus 19% better fuel economy. That's no smoke!

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Diesel World did a complete install with this Sidewinder system.
See how it was done—and what the results were
at »


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: It seems the Diesel World website
is down so click here for a PDF of the article »




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Solid credibility
: Four Wheeler magazine did a story
on how you could get a Banks turbo straight from a GM dealer »




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Diesel: 6.2L Non-turbo Trucks, '82-93

Horsepower and torque measured at rear wheels.

Horsepower and torque test data chart for Chevy 6.2L Truck

Sidewinder® Turbo system Stock Banks Improvement Results
Towing acceleration, 0-60 mph time 42.73 s 26.63 s -16.1 s 38% quicker
Towing acceleration, 0-60 mph distance 2,500 ft 1,448 ft -1,052 ft 42% less distance
Towing acceleration, 40-60 mph time 25.10 s 15.81 s -9.29 s 37% quicker
Fuel economy 11.8 mpg 14.0 mpg +2.2 mpg 19% better fuel economy
Best Gains
+60 horsepower
+115 lb-ft torque
10% better fuel economy


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Back in the 80's Banks Power turbocharger systems were offered as an OE upgrade straight from the dealership!

ApplicationYear RangePart #
Sidewinder turbo system
GM 6.2L Sub, H/D, 2wd
Emissions compliant: CARB E.O. D-161-31
1982-91 25021
Sidewinder turbo system
GM 6.2L H/D, 2wd, 2dr; 2500 Series
Emissions compliant: CARB E.O. D-161-31
1982-87 25031
Sidewinder turbo system
GM 6.2L H/D; 2dr/4dr 3500 Series, 2wd
Emissions compliant: CARB E.O. D-161-31
1982-91 25040
Sidewinder turbo system
GM 6.2L Sub, L/D, 2wd; 1500/2500 Series
Emissions compliant: CARB E.O. D-161-31
1982-91 25121
Sidewinder turbo system
Pickup, lt-duty (1500-2500 series) | 2-dr | 2wd
Emissions compliant: CARB E.O. D-161-31
1982-87 25131
Sidewinder turbo system
6.2L, H/D, 4wd; 1982-91 Suburban; 1982-87 2500 Series 2dr
Emissions compliant: CARB E.O. D-161-31
1982-91 25226
Sidewinder turbo system
GM 6.2L H/D, 4wd, 4dr; 1982-87 3500 Series 2dr, 4WD; 1982-91 3500 Series
Emissions compliant: CARB E.O. D-161-31
1982-91 25241
Sidewinder turbo system
6.2L Trk, L/D, 4wd; '82-91 Suburban 1500/2500 L/D; '82-87 1500/2500 Series
Emissions compliant: CARB E.O. D-161-31
1982-87 25326
Sidewinder turbo system
GM 6.2L Blzr, L/D, 4wd
Emissions compliant: CARB E.O. D-161-31
1982-91 25328
Banks Ram-Air filter element (fits early Sidewinder systems)
GM 6.2L Truck, Early
Air Filter Service Kit
for use with Banks OILED Air Filters
Air intake rubber elbow (fits early-body style)
Gm 6.2L Truck, Early

Owners Manual(s)

Forced Induction- Sidewinder Turbo System (early-body) Tech_icon Download
Forced Induction- Sidewinder Turbo System (late-body) Tech_icon Download

6.2L Sidewinder system


A Surplus 6.2L Blazer Gets a Banks Sidewinder Turbo Kit in Diesel World

When someone says ‘turbo’, the name Banks is usually not far behind. When you’re the first to do something, people remember your name. Gale Banks was a true pioneer in the diesel performance aftermarket we all enjoy today. Much of his personal and business success can be traced back to being the first to truly address the lack of power in the 6.2L.

click for articleBelieve it or not, Banks still offers their Chevy Sidewinder kit for the 6.2L and told us it would be almost a drop in for the military K5. So I ordered up the needed Banks Turbo kit,  Read through the instructions (several times), and called the Bank’s tech line with some questions. I also double checked the parts list & tools list, gathered up what was needed, along with some confidence, and proceeded to get started.

The kit comes complete, and we mean complete with everything to turn the non-turbo 6.2L into a turbocharged diesel. The kit includes a new exhaust manifold and exhaust system, a new air intake and high-flow air filter, and all the necessary hardware to make the conversion a bolt-on deal. The installation was a straight forward process although there are always issues when working on an older ride (factory bolts break during disassembly, taps are needed in the most hard to reach areas, radiator drain breaks, missed supper again, etc.). However, the end results was a much more powered vehicle with the added modern technology of turbo charging.

If you’re in the market for an entry level diesel truck, and don’t have a lot of money to spend, consider one of these military beauties. Plus, the Banks Sidewinder kit adds a lot of power and driveability to make the experience that much more fun.

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at »


Sidewinder Turbo Systems


"The difference in performance created by the new Banks system was like night and day. Acceleration without the trailer went from leisurely to quick. Turbo lag was barely noticeable; when the driver stabbed the throttle, the engine dug in immediately. No longer did we live in fear of uphill freeway onramps, since the truck could quickly merge with traffic. The improvement in trailer towing was also dramatic."
Trailer Life magazine

"The new Banks Sidewinder system makes the truck go like gangbusters. Turbo lag is almost non-existent."
Off-Road magazine

"The turbo increases performance without suffering any mileage penalty for its newfound power."
Four Wheeler magazine 

"The Banks turbo unit provides almost instant throttle response, with no lag, so your diesel feels more like a big-block gas engine than an oil burner. What did the increased airflow do to engine operation? By taking temperature readings while climbing a 4% grade, we found that the turbo motor wasn't working as hard as the naturally aspirated diesel. We recorded a decrease in exhaust temperatures of 13%, a decrease in engine oil temperature of 7%, and a reduction of transmission fluid temperature of 12%. It almost sounds too good to be true: increased engine performance with a corresponding increase in efficiency and a decrease in engine wear."
Sport Truck magazine 



Turbo system for Suburbans

Motorweek: Here's a blast from the past just for a bit of nostalgic fun. Back in 1989 Motorweek profiled the Banks turbo system for diesel Suburbans. The results were, just as they are now, more power and fuel economy with Banks.

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“Among the few companies that offered tuning combined with airflow, only Banks offered a system in which all the components are engineered to work together.”
Sportsman's Gear (Vol 24, Issue 7)