Aftermarket Aluminum Intake W/Cut Plenum

Discussion in 'Small Block Tech' started by Paul Stewart, Feb 27, 2018.

  1. Paul Stewart

    Paul Stewart Well-Known Member

    6D11D195-6701-450E-A958-D559FA439E83.jpeg 6D11D195-6701-450E-A958-D559FA439E83.jpeg Does this add or subtract performance?
     
    Paul Stewart, Feb 27, 2018
    #1
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    It adds some top end.
     
    LARRY70GS, Feb 28, 2018
    #2
  3. Bens99gtp

    Bens99gtp Well-Known Member

    I ran one of those intakes into the low 12s. Painted it red and almost everyone thought it was a stk intake
     
    Last edited: Mar 14, 2018
    Bens99gtp, Feb 28, 2018
    #3
  4. UNDERDOG350

    UNDERDOG350 350 Buick purestock racer

    I believe that is a clearance notch cut for use with a Holley 3 barrel carb.
     
    UNDERDOG350, Feb 28, 2018
    #4
    alec296 likes this.
  5. Jim Nichols

    Jim Nichols Well-Known Member

    It is actually a flow balance notch. Offy found it helped on the low end. It is a single plane with divider. Similar to the old Poston intake. I had one on a Ford 289 with 1" spacer. Edelbrock Performer RPM Air Gap does something similar with a notch. Old tech but a good intake from 1500-6500 RPM. I would like to see dyno results compared to Edelbrock Performer RPM and Weiand Stealth. I think it would be close. I didn't know they made one for the 350 Buick. I checked their catalog, only 215, BB and V6 Buicks.
     
    Last edited: Mar 14, 2018
    Jim Nichols, Mar 14, 2018
    #5

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