See vehicle applications link for details. The K&N 77-3070KP Air Intake fits some Cadillac Escalade, Cadillac Escalade ESV, Cadillac Escalade EXT, Chevrolet Avalanche, Chevrolet Silverado 1500, Chevrolet Suburban 1500, Chevrolet Tahoe, GMC Sierra 1500, GMC Sierra Denali, GMC Yukon, GMC Yukon Denali, GMC Yukon Denali XL, and GMC Yukon XL 1500 models. Check the K&N catalog or website for vehicle applications and specific CARB status for each vehicle and air intake.
Some K&N 77 series air intakes are not legal for sale or use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. More and more people are discovering the monster power available from a well-engineered air intake and K&N sells over 500,000 air intakes every year, so go ahead and wake the sleeping giant in your car.
This air intake is relatively easy to install usually in 90 minutes or less using existing factory mounting points requiring commonly available tools to do the job. K&N has several types of intakes that will completely replace the factory airflow assembly including the filter, air box and air path. The oversized cone shaped air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions.
The intake tube has an attractive chrome-like finish that's made to last and it accommodates the factory mass air sensor and a replacement silicone crank case vent hose. Air is directed through the intake tube into the engine’s throttle body for a guaranteed power gain. The 77-3070KP air intake comes with a chrome topped K&N high-flow air filter and a heat shield that installs into the previous air box space. More air means more usable power and acceleration throughout your engine’s RPM range. The improved air flow allows your engine to inhale a larger amount of air than it would from the stock air intake. K&N is a recognized leader in engineering air-delivery systems guaranteed to add horsepower to your car, truck, SUV, or Jeep vehicle. The restrictive factory air filter and air intake housing on your vehicle are replaced by this K&N air intake system which is designed to dramatically reduce air flow restriction as it smoothes and straightens air flow. Feed cold air to your engine with a K&N cold air intake and feel it deliver the power and performance you want on the street or at the track. The K&N 77-3070KP high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction system. So keep that in mind when shopping for intakes and exhaust headers.K&N 77 Series High-Flow Performance Air Intakes Obviously cylinder head porting and valve sizing, as well as forced induction changes things (namely, the VE of the engine). Putting a 650CFM Holley carb on your 350 chevy that only flows a calculated 421CFM is stupidly overkill. Throttle bodies and carburetors are the same way. Example, suppose the K&N "cold air" intake claims that it flows 500cfm. So putting ANY component in the intake or exhaust tract that outflows that number, is completely unnecessary and excessive.
Using V = (RPMxCID)/3456 x(VE), and figuring 80% VE (Volumetric efficiency), we get a max CFM of 271.783. Take our 3.7L, making max hp at 5200rpm as the example. There are a few formulas to calculate air flow. You can add a 90mm throttle body and have NO air filter, any engine can only **** in as much as it can and that is a fixed amount at max capacity. A 3.7L displacement engine with the CFM flow rate of our cylinder heads, cannot flow more air than what the stock box/intake tube is already capable of.