Banks Built Lokjaw C20
Banks Built Lokjaw C20
Banks Built Lokjaw C20

Widely regarded as an authority in diesel engine development and forced induction, Banks opens its race shop to viewers who will watch and interact with the team as they create a one-of-a-kind supercharged Duramax L5P diesel-powered 1966 Chevy C-20. The build is unlike anything that Banks has done.

Build Partners:

Roadster Shop

We chose Roadster Shop’s 1960-66 C10 Truck SPEC Series Slammed Chassis. The quality and technology in this engineered chassis are a perfect fit for our high-horsepower build.

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Nitto Tire

Great power requires massive traction. We chose Nitto’s NT555 series tires to make sure we can put this power to the ground.

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Black Rhino Hard Alloy Wheels

We’ve chosen Black Rhino wheels because of their attention to quality, detail, and military look which ties in with our Joint Light Tactical Vehicle engine development.

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Whipple Superchargers

To create the ultimate Street Beast, we chose the Whipple Gen 5 3.8L Supercharger to complement the Duramax L5P we are dropping into Lokjaw.

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Wilwood Brakes

Wilwood’s Tactical Extreme TX6R Big Brake kits are the ultimate in braking performance for Trucks, SUVs, and Armored Vehicles.

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Transou Designs

Banks Lokjaw concept design was put together by Transou Design. Their skill, quality and attention to detail bring this build to life.

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Strange Engineering

When it comes to a custom 8-lug full-floating rear axle and housing, you have to go to Strange Engineering.

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KibbeTech Off-Road

Fabricated knuckles designed to accommodate 8-lug GM unit bearing (hub). Direct bolt-in for Roadster Shop Spec Series Chassis.

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At the heart of the beast is its brain. We chose the MoTeC M1 series ECM for its advanced features and flexibility allowing us full control.

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Mechman Alternators

We chose Mechman’s High-Output 370 Amp Elite Series Alternator. With big power, you need lots of juice and this one packs a punch.

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Vibrant Performance

HD Clamps, HD Clamp Titanium Weld Ferrules, Titanium Tubing, Titanium Flanges, Merge Collectors, Shutoff Valves, Bellmouth Velocity Stack

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Eaton: Electrical and Industrial | Power management solutions

We chose the Ford 9″ 35-spline Truetrac rear differential. The increased strength and lightweight form are ideal for high-horsepower.

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ATS Diesel Performance

We chose ATS because getting the power from our prototype Banks L5P Crate Motor to the wheels requires a strong, durable transmission.

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TMI Products

Custom molded upholstered door panels, complete bucket seats, center console, sun visors, and steering wheel, all made in the USA.

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Heatshield Products High-Performance Insulation

We chose Heat Shield Products for their state of the art well-engineered line of heat shields and sound insulation.

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Vintage Air - Performance Air-Conditioning and Heating

Gen IV climate-controlled Heater/AC and defrost sure-fit for the 64-66 C-Series trucks with our new upgraded control panel. Visit

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We’ve teamed with RideTech on the LokJaw project because of their long history working with air suspension and their mastery of air management.

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Energy Suspension

Energy Suspension 3.4137R Pickup Body Mounts Will replace distorted and worn-out original rubber mounts to maintain car body and truck cab to bed alignment. Original rubber mounts are so soft

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New Build Series coming January 11th @ 4pm PST, 7pm EST

New Build Series

Starting January 11th, all-new Build Series every Monday at 4 pm Pacific (7 pm Eastern). You’ll have to tune in to find out more!

Banks Built episode 1 - Blank Canvas

What should we do to this 1966 Chevy? | BANKS BUILT Ep 1

We purchased a running 1966 Chevy C20 3/4 ton pickup for $1. Yes, one dollar! In this episode, we explore our truck before deciding what we’re going to do with it. Follow along as we give this decomposing truck a new life.

How we’ll gather data from our ’66 Chevy C20 | BANKS BUILT Ep 2

The Mr. Goodwrench 350 crate engine is rated at 190-250 horsepower. How much do you think it’ll actually make on the dyno? We aim to find out. But putting our 1966 Chevy C20 on the chassis dyno will only tell us the horsepower it’s making at the wheels. We want

Our ’66 Chevy hits the dyno! | BANKS BUILT Ep 3

Our ’66 Chevy big window C20 hits the dyno. We find out just how much power it makes with the ’99 Mr. Goodwrench 350 crate engine and a very dirty stock air filter. Watch Gale calculate the air density loss between the truck’s grille and intake manifold. This is the

Our ’66 Chevy hits the dyno! | BANKS BUILT Ep 3

The Mr. Goodwrench 350 crate engine in our ’66 Chevy is rated at 190-250 horsepower. In this episode we not only find out how much power it’s actually producing, but we watch as Gale shows us how to calculate the horsepower loss between the grille and the intake manifold. It’s all about

Time for upgrades! | BANKS BUILT Ep 4

The ’66 Chevy is getting some major upgrades including a supercharged 2021 Duramax L5P diesel engine. But the surprises don’t stop there. Gale and the team reveal the rusty pickup will be fitted with a Roadster Shop Spec Series chassis, Wilwood TX6R big brake kit, Nitto Tires, Black Rhino Hard Alloy 8-lug wheels, and RideTech

Epic fabrication. Inside Roadster Shop! | BANKS BUILT Ep 5

Now that Gale and the team have revealed that the rusty ’66 Chevy will be fitted with a supercharged Duramax L5P diesel engine, the next step is to design a chassis that will support the heavier and much wider engine. But this could be a challenge since the goal is

Engineering a Custom 8-lug Axle! | BANKS BUILT Ep 6

Keeping our ’66 Chevy C20 3/4-ton pickup an 8-lug has been tougher than we expected. We did some research and discovered there are simply no off-the-shelf 8-lug axles available, especially ones that will accommodate a Watt’s link and our Roadster Shop chassis specs. We simply weren’t willing to go from

Can it make it to KibbeTech Off-Road? | Banks Built Ep 7

Most restored C10 and C20 pickups are 5 or 6-lug. Not LokJaw. This 3/4-ton Chevy will keep its 8-lug status. Thanks to Strange Engineering we now have a new 8-lug full-floating rear axle. To support the front hub assembly, Roadster Shop typically couples Wilwood’s popular 5-lug ProSpindles with their SPEC

We used Wilwood’s geometry! | BANKS BUILT Ep 9

The guys secure the final piece of the 8-lug puzzle; custom front spindles that’ll accommodate our GM 8-lug hubs! As you’ll recall from previous episodes, it’s important that we keep LokJaw, our ’66 Chevy 3/4 ton C20, an 8-lug truck. Why? Strength and aesthetics. Erik and Jay head back to

A transmission built for 1,200 HP | BANKS BUILT Ep 10

Our supercharged Duramax will produce 650-1,200 horsepower depending on if Gale adds a turbo or nitrous to the supercharged engine. That means we’ll need a stout transmission to get the power to the ground. We head to Arvada, Colorado to consult with ATS Diesel founder Clint Cannon about their Allison

Gas vs. Diesel with Banks Power | The Bottom Line

Kevin Aguilar’s “The Bottom Line”’, a regular feature found on Driving Line’s YouTube channel, focuses primarily on lowered vintage pickup trucks. When Kevin heard that Banks was doing something lowered he knew it’d be different than anything he’d covered before. He was keenly interested in the fact that Banks’ Chevy C20

A chassis built to support 1,000 lb-ft of torque | BANKS BUILT Ep 11

A chassis built to support 1,000 lb-ft of torque Watch Roadster Shop engineer a custom Spec Series chassis for LokJaw, our supercharged Duramax-powered ’66 Chevy big-window longbed. Not only does the chassis have to accommodate a much larger engine than a typical C20 pickup, but it must also withstand over 1,000 lb-ft

Roadster Shop reveals our chassis! | Banks Built Ep 12

​Roadster Shop finally reveals the customized Spec Series chassis for our rusty 1966 Chevy pickup. Not only will it accommodate our supercharged Duramax, which is a much larger engine than the old Mr. Goodwrench 350, but it will stay straight when subjected to over 1,000 lb-ft of torque. Oh, and

How to BRAKE a supercharged Duramax | BANKS BUILT Ep 13

Wilwood teaches us a thing or two about brakes. Having the right brake setup is incredibly important, especially if you want to slow down a heavy truck with big wheels and tires. Wilwood Engineering’s Mike Hamrick breaks down braking and explains how to choose the right components for our truck

How to BRAKE a supercharged Duramax Pt 2 | BANKS BUILT Ep 14

See how high-quality brake systems are made in this tour of Wilwood Engineering. We’ll be using Wilwood’s massive TX6R brake system on our ’66 Chevy C20 pickup, along with their new forged aluminum master cylinder and 10:1 swing mount brake pedal. Walk with us through Wilwood’s manufacturing facility to see

Vintage Air - Performance Air-Conditioning and Heating

Lokjaw: Vintage Air

Gen IV climate-controlled Heater/AC and defrost sure-fit for the 64-66 C-Series trucks with our new upgraded control panel. Visit

The first supercharged Duramax camshaft! | BANKS BUILT Ep 16

At 4,200 RPM, the stock Duramax L5P intake valve is only open for nine-thousandths of a second. (That’s .009 of a second!) We want to run our supercharged diesel engine over 6,000 RPM so the valve-open time will be further decreased. Gale explains how our new .400″ and .500″ experimental

Designing the Perfect Engine Bay | BANKS BUILT Ep 18

Gale and Erik are joined by Sean Ramage from Empire Fabrication. Be a fly-on-the-wall as the metal shaper dissects LokJaw, walking us through every step of the build; from the engine bay to articulating bed. Having worked on AMBR (America’s Most Beautiful Roadster) Award-winning showstoppers to famous Fast & Furious


Lokjaw: RideTech

We’ve teamed with RideTech on the LokJaw project because of their long history working with air suspension and their mastery of air management.

Unboxing parts that modernize our ’66 Chevy | BANKS BUILT Ep 19

Before we can drop off LokJaw at Empire Fabrication for sheet metal work, we need to prep the engine bay and mockup as much of the truck as we can. Erik, Banks Prototype Engineer and the youngest member of the Mechanical Engineering Team, unboxes the Ridetech air suspension management, Aeromotive fuel system

Energy Suspension

LokJaw: Energy Suspension

Energy Suspension 3.4137R Pickup Body Mounts Will replace distorted and worn-out original rubber mounts to maintain car body and truck cab to bed alignment. Original rubber mounts are so soft they often crack, distort, and crush so badly they often fall off. And aluminum body mounts are too harsh for

Supercharging our Duramax. New intercooler design. | BANKS BUILT Ep 21

Intercooler and Supercharger tech! Erik, our prototype engineer introduces Matt Gamble, Bank’s newest team member. Matt heads up our turn-key engine program’s design and test group. Two areas that Matt is addressing early in the engine development stages are the supercharger and intercooler, both of which will be bespoke to