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  1. #31
    casual poster JaseQ314's Avatar
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    Quote Originally Posted by 427 View Post
    Here's a single plane for ya.
    Edelbrock Super Victor..i think it might be thirsty..

    Sent from my GT-I9507 using Tapatalk

    An unusual looking Holden 308.

  2. #32
    427
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    Well spotted mate. This project will begin this year...

  3. #33
    Part of the furniture Williamz's Avatar
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    +1 for the Performer. Had two of these now on different engines, both stoke stroke 308's. One with a TQ30, and other a stocker. Maxitork will work in the hands of a builder who knows what they're doing though, don't get drawn into the hype.

    Anyone done a good thread on that dual plane air gap manifold yet for 308's yet? I've been under a rock for a while

  4. #34
    Do you ever leave? paulzig's Avatar
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    Why buy the dual plane airgap when for the same price you get a victor jr ... You dont even have to know what you are doing to make a single plane work really well...

  5. #35
    Not the Kingswood! hq308's Avatar
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    Quote Originally Posted by paulzig View Post
    Why buy the dual plane airgap when for the same price you get a victor jr ... You dont even have to know what you are doing to make a single plane work really well...
    The only reason would be bonnet clearance otherwise you'd go for the Victor Jr.

    Having said that the airgap isn't that bad a compromise if you do need the clearance (especially on a std stroke). In my case peak power is at ~6200rpm so not really sure how much I'd gain with a single plane.

  6. #36
    Do you ever leave? paulzig's Avatar
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    Quote Originally Posted by hq308 View Post
    In my case peak power is at ~6200rpm so not really sure how much I'd gain with a single plane.
    Might bring it up to 6500RPM hopefully.. But you would also gain at the over rev past that up to 7000+ You dont need as much duration on the cam if your induction system, heads, intake, carburetor/TB breathe more freely.. If you had a cam that was 250, you might get away with less like 240-245 for the same RPM

  7. #37
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    Iíd be bloody keen to see how a Holden 355 (with around 450hp) would perform using an Edelbrock Dual Plane Air Gap and then try it with the Edelbrock Single Plane as a back to back test...

  8. #38
    Not the Kingswood! hq308's Avatar
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    Quote Originally Posted by paulzig View Post
    Might bring it up to 6500RPM hopefully.. But you would also gain at the over rev past that up to 7000+ You dont need as much duration on the cam if your induction system, heads, intake, carburetor/TB breathe more freely.. If you had a cam that was 250, you might get away with less like 240-245 for the same RPM
    Thatíd be good if the engine was built for 7000+ but itís not. Itís a street engine and the rev limit is set to 6500 to help it live for a while.

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