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Thread: 'as cast' cv-1.1 flow on 4.15 bore

  1. #1
    Join Date
    Dec 2008
    Location
    springfield, mo
    Posts
    260

    Default 'as cast' cv-1.1 flow on 4.15 bore

    bill flow tested the new cv-1.1 on 4.15" bore with 2.15 / 1.72 valves which uses standard roller rockers. as you can see, the port turns on quickly with 356cfm at .600" lift, and holds this # up to 1.0" lift, where it flows 358cfm. this port has 2.95 sq inches at the intake flange, which compares to 2.8 sq inches of wide port e-head which requires offset shaft rockers. it was designed with the latest oval port technology for use on street/strip 400/428/455 apps:
    Attached Images Attached Images

  2. #2
    Join Date
    Feb 2003
    Location
    Murphy NC soon!
    Age
    60
    Posts
    2,392

    Default

    Fantastic results Jim!!

    5
    35ci NA CV-1 1050 - 940hp@7000/825tq@5200
    You will make power with CV-1 heads if you stop thinking of them as a 'Pontiac' head and think of them as a head on a Pontiac block

    PontiacGroup.com

    Nelson Competition Inc


  3. #3
    Join Date
    Jun 2017
    Posts
    1

    Default

    Thanks for posting your results Jim, I'll post mine soon.

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