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  1. #1

    Default Difference between K&N Aircharger (part # 63-3070) and K&N 77 Kit (part # 77-3070KP)?

    Both seem to be about the same price, with one claiming a 16+hp gain, the other 9+hp gain at the same RPM.

    Why would you choose one over the other?

    FYI - going in a 2009 Silverado 1500 4.8L

    Appreciate the help.

  2. #2
    murdog94's Avatar
    Join Date
    Feb 2008
    Cloquet, Minnesota, United States
    Blog Entries


    real world. you may get 2hp from either.. Those are under "optimum" conditions with motors that have been tuned for them.


    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  3. #3


    Thanks Mike.

    Would the difference solely be aesthetics then? Or is there a slight sound difference?

  4. #4


    Well, Mike may have gotten less than exciting results, but I got 2 mpg better on my truck after going with K&N, not sure it feels any faster, but the mileage is a little better, and the fact that the filters are cleanable is great!

  5. #5


    Like Mike said, you are not going to feel a seat of the pants difference with either. There are better brands out there too..... IMHO

    ________2013 4C Rated__________

  6. #6

    Red Z71 Max's Avatar
    Join Date
    May 2011
    Myrtle Beach, SC
    Blog Entries


    As far as big HP gains from A CAI, there will be very little. They will help with fuel mileage due to the motor breathes better. There a lot of options out here for CAI's but K&N has always made a quality product. Look around and you will find other options like Airaid, Volant, Vararam, AFE, Banks, Bully Dog and the list goes on. Good luck!!

    (Scott) Myrtle Beach, SC
    January 2012 ROTM WINNER
    2011 GMC Sierra Z71 MAX 6.2 L w/ Trailering Package
    Rough Country, XD Rockstars, Nitto Trail Grapplers, N Fab, Lund Genesis, Putco, Gator Grip,
    Flowmaster 40 series, Diablosport InTune, Banks Ram Air CAI,
    WeatherTech, AVS Aeroskin, Tow Mirrors,

  7. #7


    The 77 is a metal inlet tube I think and the air charger is plastic. I have the air charger with tune and exhaust and I'm pushing around 40 more horses as soon as I get home im gunna throw it on my dads Dyno and seems exact numbers
    2009 chevy 1500 z71 4x4
    2.5 ccm level,2.5 inch rear blocks 305/60/18 coopers stt,Debadged,10 series flow w/dual exit in front or right rear tire, KN CAI, diablo InTune, 18% tint all the way around ,spec-d euro headlights with black housings,winjet smoke LED tail lights,putco LED third brake light smoked, fab fours front bumper with 10k warn winch, RK sports ram air hood
    1965 c10 swb, zz4 350 with the hot cam and fast burn heads and a 780 Holley on top, richmond super street 5 speed,restorod

  8. #8
    Sr. Apprentice black03silverado's Avatar
    Join Date
    Dec 2006
    new brunswick Canada


    I just put a K&N kit on my 08 with the plastic tube and the only difference i noticed was much better throttle response, I already had a diablosport predator, and a Magnaflow dual catback on the truck and the intake i think allows the truck to breathe better thus better throttle response, not to mention it adds to the mangaflow sound, it a lot cooler sounding when you mash the GO pedal lol. just my 2 cents
    2008 chevrolet silverado ec/sb 5.3L Z71
    magnaflow dual cat-back exhaust
    K&N filter
    chrome grille
    chrome mirror and door handles
    bed caps
    gm boxliner
    stainless tube steps
    chrome bugger

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