Whatever you do, if you do it for 140 years, you should know a thing or two. Enter Valvoline and their 140 years of experience in motor oil. After that amount of time, Valvoline has had the chance to fine tune their products and get their lubricants down to an exact science. With their 140th anniversary, they wanted to reinvent themselves. To do so, they enlisted the help of Hendrick Motorsports and two of their top drivers -- Dale Earnhardt Jr. and Jimmie Johnson. The idea was to have the two drivers pick separate trucks that they will in turn help to "reinvent." Follow along to see how two performance vehicle experts come together to help Valvoline celebrate their 140th anniversary.

We'll start with Dale's truck. In a nod to his birth year, Jr. chose a 1974 Chevrolet C10. Luckily he was able to find one in darn near flawless condition, which would be the perfect starting point for this build. Once in the hands of the crew at Hendrick Performance, the square body would never be the same again. The first to go was the worn out suspension, which was replaced with new CPP duplicates. Next, the truck was given a performance stance with the help of Wilwood and CPP. Finally, custom 22-inch Boss Motorsports wheels were shod in sticky Eagle RS-A 255/45R20 rubber to make cornering a breeze, while Wilwood brakes help bring the whole thing to a halt.

Gone is the factory 350ci engine under the hood and in its place is a Chevrolet Performance Parts 6.2L LS3 crate engine. This is backed up with a GMPP 4L60e transmission, transferring the more than 400 horses coming from the engine to the ground. Keeping everything lubricated in the engine is Valvoline's fully synthetic SynPower motor oil. To get everything to fit under the hood, a custom intake tube was created to relocate the filter element behind the drive side headlight. Feeding this thirsty powerhouse is a custom aluminum fuel cell that resides behind the rear axle.

Since this truck was in great condition to start with, the only thing the interior needed was a fresh set of Autometer Phantom gauges. With that said and done, Dale Jr.'s truck was done and work could begin on Jimmie's truck.

When Jimmie Johnson was looking for a Chevy truck, he had his heart set on a '48-'55 model. Unlike Jr.'s luck, Jimmie found one but it was sitting in a field in Georgia and was in rough shape. After shipping it up to Hendrick's headquarters in Charlotte, North Carolina, the Hendrick Performance crew got to work breathing new life into forgotten First Series.

Even though the body was in rough shape, the decision was made to just clean up the rough spots and flat clear over the whole truck. This combined the rustic look of the original truck with modern matte paint styling.

Speaking of modern styling, the factory I-6 motor and three-speed manual were trashed in favor of an up-to-date LS3 and 4L60e. Again this was filled with Valvoline's SynPower motor oil for maximum performance both on the track and the street. This truck also received the custom intake treatment since there isn't much room between the engine and radiator.

Handling all of the newfound power is a full complement of Heidt's performance suspension components. This brought the truck down much closer to terra firma and stiffened it up a bunch. There won't be an autocross course or drag strip that this truck won't be able to handle. This suspension combined with sticky Eagle RS-A tires ensure no matter the corner, the truck will stay firmly planted.

As with the square body, Jimmie's '55 received very little on the inside. The only real addition were Autometer Designer Black II gauges to give Jimmie immediate feedback on the engine vitals.

Once the builds were complete, Valvoline held a contest to have consumers guess how the trucks were built. Those who guessed correctly were entered for a chance to win a truck that will be built to their specifications.

JUST THE FACTS
Year Make Model: 1974 Chevrolet C10
Owner and City/State: Dale Earnhardt Jr. / Charlotte, North Carolina
ENGINE
Type: 6.2L LS3
Induction: custom intake
Exhaust: 3-inch stainless
Built by: Chevrolet Performance
DRIVETRAIN
Transmission: 4L60e
CHASSIS
Front suspension: CPP control arms, CPP sway bar, Wilwood lowering spindles
Rear suspension: CPP flip kit
Brakes: Wilwood disc brakes
WHEELS & TIRES
Wheels: 20x8.5-inch Boss Motorsports 338
Tires: 255/45R20 Eagle RS-A

JUST THE FACTS
Year Make Model: 1955 Chevrolet 3100
Owner and City/State: Jimmie Johnson / Charlotte, North Carolina
ENGINE
Type: 6.2L LS3
Induction: custom intake
Exhaust: 3-inch stainless
Built by: Chevrolet Performance
DRIVETRAIN
Transmission: 4L60e
CHASSIS
Front suspension: Heidt's upper and lower control arms, Heidt's spindles, Heidt's coilovers
Rear suspension: Heidt's four-link, Heidt's coilovers
Brakes: Wilwood disc brakes
WHEELS & TIRES
Wheels: 20x8.5-inch Boss Motorsports 338
Tires: 255/45R20 Eagle RS-A