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Is it true?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Orange, Oct 24, 2000.

  1. Orange

    Orange Registered Member

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    Today at work, a truck came in (chevy) with it's air cleaner top upside down. I asked him why he did this and he told me it helped with horsepower. Is it any different than the top on the right way?

    Ok I'm done. OH DAMN!! It broke again.
     
  2. 1HIHUM

    1HIHUM 1/2 ton status

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    Probably, to allow more air to flow into the carb.
     
  3. 87 mid canada k5

    87 mid canada k5 1/2 ton status

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    Try a search on this, a bunch of the guys were talking about the same thing a month or so ago.

    Denis -MIDCAN k5 " DIG A HOLE!!!"
     
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I'll give you a quick re-cap. The general consensus was that flipping the 'lid' made it louder but actually hurt performance. This is due to the hot under hood air being taken in which is not as dense as the ducted air from the front of the truck.

    Rene

    [​IMG]
     
  5. Stoopalini

    Stoopalini 1/2 ton status

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    I used to flip the lid on my '82 Cutlass. It had a 307 with edlebrock 4BBL.

    Right before a race, I would flip the air cleaner lid over to allow more air into the carb, and also I would plug the secondary vaccuum line on the carb to keep the secondaries open -- more jump off the line.

    It did improve the performance of that 307 significantly. The 350 in my K5 has a chrome air filter housing, so it's as if it is always flipped over and it runs great!

    Thomas.

    -- '84 K5 Blazer --
    http://stoopalini.coloradok5.com/index.html
     
  6. Chewy

    Chewy 1/2 ton status

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    tRustyK5 is right. The warmer air is less dense and will hurt performance. I tried it for a while and didn't notice much of a difference.

    [​IMG] '87 Beast
    Colorado, USA
     
  7. 90K5

    90K5 1/2 ton status

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    I flipped mine and it jus made it louder, didn't notice any change in performance, but if its louder, you tend to think your going faster.

    90K5
     
  8. nyyef

    nyyef 1/2 ton status

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    90k5, sorry to correct, but louder IS faster, as least my mother thinks so.

    Knife.
    knife.coloradok5.com
     
  9. Thunder

    Thunder 3/4 ton status

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    I turned mine upside down on my 89 tbi and it did help. I could really tell the difference when towing my boat up a hill on the way to a local lake. It definatly had more power but I did not like all the noise. So I modified the stock cold air delivery system to give more air and it works just as good and better on a hot day.
     

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