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Thread: Vacuum Cam

  1. #1
    Join Date
    Feb 2010
    Posts
    23

    Default Vacuum Cam

    I am in need of a cam that can pull 18" at 1000rpm Does anyone make and off the shelf or do i need to have one custom ground? Any suggestions on a good place to make on if i do? Im running a 358 500cfm 4412, flat tops, 76cc heads completley stock, has to be hydraulic flat tappet cam and lifters.

  2. #2
    Join Date
    Jan 2009
    Location
    Waterloo, Alabama
    Posts
    321

    Default

    I dont know where you are located. But we have the same vacuum rule here in south TN/North AL. Call a man named Ed Nix @ Nix Machine & Balance. He is a master at these cams and has some in stock. (931) 762-3977.
    "Doc"
    Dowdyracing.com

  3. #3

    Default

    Also on the engines we have build for vacume rules we run the dist. locked as you will create more vacume at max. advance. And we tend to stay with a single pattern cam as well.

  4. #4
    Join Date
    May 2008
    Posts
    574

    Default

    Keep the duration @.050 down below 235 and a 112 LC and you should be fine.
    With good rings/V-max lifters/good carb spacer etc. you might be able to run a little more but this should be safe.

  5. #5
    Join Date
    Feb 2010
    Posts
    23

    Default

    what would be a good carb spacer?

  6. #6
    Join Date
    May 2008
    Posts
    574

    Default

    HVH and Flow Design 1" both work well with the HVH being a little better all around I believe

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