Intake help for Ford 460 with banks twin turbo kit
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Intake help for Ford 460 with banks twin turbo kit

  1. #1
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    Default Intake help for Ford 460 with banks twin turbo kit

    I am in the process of putting the engine back together for my 77 hallett mini day cruiser jet boat. It had a 460 Hardin marine/Gale banks turbo package. It was the typical all iron 460 with the Cobra jet style intake with regular port d3ve heads like most were. I want to upgrade to an aluminum intake. New engine is a 9to1 with slightly worked d3ve heads, comp cams jet boat cam. That's about it for the engine. I just don't want to put that heavy intake back on, and want to build a little extra power if I can. The banks turbo kit is the stage 1 with single carb, small intercooler, and only about 5lbs of boost. What are your guys recommendations?

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    Some guy obnoxious001's Avatar
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    Quote Originally Posted by 79centurion1 View Post
    What are your guys recommendations?
    #1,, get a larger intercooler. "Stage 1" would have been that little carb box looking thing with water run though it, find one of the ones that has one or two radiators.

    If you are going to keep it low boost, an aluminum dual plane may be best.

    By the way, if you want to increase boost (don't go nuts with it),, you can tap the exhaust housings, and put a drilled pipe plug in to reduce the opening. If you were at 5 lbs, likely you have 5/8" bypass holes.

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    steelcomp was here
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    For something mildly boosted any small single plane will work. Something like the Edelbrock TorquerII. Personally I wouldn't want to run a dual plane boosted. I mean, there's probably nothing bad about it, it's just that dual planes were designed specifically for carburetors, and for low rpm carbureted applications at that. That's not an issue with boost. Simple point A to point B air and fuel distribution will suffice.
    Last edited by scott foxwell; 06-17-2017 at 07:55 AM.
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    Some guy obnoxious001's Avatar
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    My logic for the dual plane on one of the early low boost draw through turbo kits is that with no waste gate and very little boost, they were sluggish on the bottom end(and where most peoples opinion of "turbo lag" was formed)

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    I think for this go around I am going to keep the boost low and leave the hat. I want to go with a bigger intercooler and some point, but it went 16 years before needed to be rebuilt. So figured if it worked before for so long, why change it. And I have a big hp twin turbo deal in a liberator. Do you recommend the weiand intake or Edelbrock? And in standard port or mismatch it like before and use Cobra jet style ( originally it was Cobra jet style which is much bigger than the heads, but it worked better back then than the restrictive small port intakes)

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    steelcomp was here
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    Quote Originally Posted by obnoxious001 View Post
    My logic for the dual plane on one of the early low boost draw through turbo kits is that with no waste gate and very little boost, they were sluggish on the bottom end(and where most peoples opinion of "turbo lag" was formed)
    Yeah, but a dual plane isn't going to change that. There's no carb sitting on the manifold...no benefit of the intake design to increase signal strength to the carb. Better off having as straight a shot as possible from the carb adapter to the cyl head without all the congestion of the dual plane. JMO.
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    steelcomp was here
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    Quote Originally Posted by 79centurion1 View Post
    I think for this go around I am going to keep the boost low and leave the hat. I want to go with a bigger intercooler and some point, but it went 16 years before needed to be rebuilt. So figured if it worked before for so long, why change it. And I have a big hp twin turbo deal in a liberator. Do you recommend the weiand intake or Edelbrock? And in standard port or mismatch it like before and use Cobra jet style ( originally it was Cobra jet style which is much bigger than the heads, but it worked better back then than the restrictive small port intakes)
    You really can't use NA performance comparisons when talking about a boosted app. Just about everything goes out the window. Really, you need something to get from point A to point B as simply as possible and it doesn't need to be big. The CJ intake worked better because of more runner cross section and plenum volume in spite of the port mismatch but you would only realize that in an NA application. I don't think Weiand makes a single plane for the 460 and that's what I would stick with. The standard 4V Ede. TorquerII will be plenty for what you want to do. For low boost I wouldn't go too big on the runners, IE; I wouldn't use a Victor. THAT could make things lazy because of excessive runner cross section and a loss of velocity. Velocity is king even with boosted apps. as long as it's not a huge restriction.
    If God is your co-pilot, change seats!
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    I am pretty familiar with boost. I was 79centurion on the boards, but couldn't get back in so I made a new profile.. this is one of my other boats that I did a build up in the jet section.. just haven't built a Ford before or a draw thru.. but boat has been in the family almost 20 years. So figured leave it as it was and have fun with it
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    stealth open plenum aluminum manifold.

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