Big Block intake porting

Discussion in 'High Performance Modifications' started by 1980RS, Dec 7, 2018.

  1. G72Zed

    G72Zed Veteran Member

    627
    85
    Sep 8, 2015
    Canada
    Can you share what the HP was at 6500 with the Dart intake, % gained. Also, what texture profile do you prefer or use, Burr, bent Burr or 80-60 tootsie rolls?

    I'm back to the 60-80 rolls.

    NB: Your so right on the "secrecy" thing, circle track here.
     
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  2. 1980RS

    1980RS Veteran Member

    2,312
    172
    Jun 17, 2006
    MN
    I would like to tell you what the % was but the only thing I saw was the hp and tq. numbers. The hp 38hp gain was at 6500 but I am sure it falls off quickly after that as his is a peanut port engine also. As for the finish I have just been using a 6 or 7" burr (not bent) at low speed, it works the best with an air grinder (better control) but I have been able to make it work at low speed with my new electric one I got off Amazon and it works fantastic except that the front gets hot like my old Makita but that's what they make gloves for. Now I just have to get the intake back so I can try it on my engine this year, the Jeg's single plane eddy knock off was not so good in testing last time out to the track.
     
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  3. G72Zed

    G72Zed Veteran Member

    627
    85
    Sep 8, 2015
    Canada
    Cool, thanks for sharing 1980RS.
     
  4. 1980RS

    1980RS Veteran Member

    2,312
    172
    Jun 17, 2006
    MN
    You're welcome, if I get any new news on other test I will post it.
     
  5. 80NastyZ

    80NastyZ Veteran Member

    135
    0
    Feb 8, 2007
    Poconos P.A.
    Dart is a good intake , I will be curious as to your results with it in a real world PP engine as compared to the Victor Jr and Air gap , I am not a fan of Dual Plane intakes but can still keep an open mind to real results.

    I have been fooling around with the PP castings for years , low buck and make a bunch of power when paired right and the right grind is put to them .

    The 468 in my dads '70 GMC went 461/505 with a 230@.050 hyd roller and moderate compression , 236 Peanut castings , Victor Jr intake , 850 Holley .

    I enjoy your tests.

    TOM
     

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