2017 Silverado HD gets a ram-air hood to feed the Duramax Ram-air is not just for Pontiacs anymore.

Cervini's Auto Designs has two hoods for the '97-'06 Jeep TJ Wrangler. The three-inch cowl hood provides plenty of clearance for engine upgrades and cools under hood temps. The Ram Air Hood ...

The 2017 Chevrolet Silverado HD will feature an all-new patented ram air intake system to bring down engine temp and sustain prolonged performance.

1979 was the Camaro’s most prolific year ever, and the Z28 model also reached the peak of its all-time production; this junkyard example is one of them ...

This is why the 2017 Silverado HD ‘s functional hood scoop uses a unique air/water separator that ensures only combustion-friendly dry air is drawn into the engine.

The 2017 Chevrolet Silverado 2500 HD features a new hood scoop to feed air to its diesel engine.

Add to those a Ram Air intake, and that’s how you squeeze out 450 horsepower at the crankshaft from merely 5.7 liters of displacement.

New for the 2017 model year, the intake is marked by a hood scoop and is said to provide most of the air—around 60 percent—going into the engine.

Did the owner of this 1967 Chevy Impala SS convertible auction it off because convertibles suck cold air in the snow.