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GM B-Body Forum, 77-79 Caprice/Impala Forum

A forum for all the owners and enthusiasts of General Motors B-Bodies from 1965-1996, but dedicated to the owners of 1977-1979 Impalas and Caprices. Join up now!

    $44 Dyno Proven Horse Power Increase

    Sweet Seventy9
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    $44 Dyno Proven Horse Power Increase

    Post  Sweet Seventy9 on Sun Dec 14, 2014 5:15 pm

    The K&N Stubstack.  A lot of people don't know about these so I thought I'd post about them.

    The K&N Stubstack is designed to increase the airflow of carburetors by decreasing the restriction around the choke horn.
    The stubstack fits inside the air cleaner housing and slides snugly down over the choke horn.  

    They're dyno proven to increase hp.

    For Holley carbs:

    For Edelbrock and some Carter carbs:

    Back in the day when I used to use these, they were meant for carbs with the choke removed but didn't have the horn milled off. Today's design looks slightly different from what I used years ago, and appears that it can be used on carbs WITHOUT the choke removed. IDK for sure though, so I'd check with Holley first.

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    Re: $44 Dyno Proven Horse Power Increase

    Post  hugh.stone.rocket on Fri Mar 06, 2015 10:35 am

    Q Jet gets no love lol!
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    Re: $44 Dyno Proven Horse Power Increase

    Post  Myloth on Fri Mar 06, 2015 3:49 pm

    Yeah I think I read an article on add-on HP products while back and this was one of the few that worked. I never used one

    though but have had good experience with K&N products.

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    Re: $44 Dyno Proven Horse Power Increase

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