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  • Can I put a 1974 aluminum intake on my 74 that has a cast intake
  • Can I put a 1974 aluminum intake on my 74 that has a cast intake
  • Can I put a 1974 aluminum intake on my 74 that has a cast intake
  • Can I put a 1974 aluminum intake on my 74 that has a cast intake

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  1. #1
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    Default Can I put a 1974 aluminum intake on my 74 that has a cast intake

    I'm having a custom builder build a 406/454hp engine for me to put in my 1974 vette. He has found a aluminum intake and asked me if my current engine had a "mushroom type" EGR on it. This is all located on the passenger side of the Carb. I believe my does have the choke system on the passenger side that he wants and the EGR that he wants. He has also asked if there is two small lines that go into the intake and I do ( I think) have what he wants but I'm not sure. Included is a picture of my carb taken from he driver's side. To the right side (back side of the carb) you see a dull silver tubular thing and it has two lines going into it. Is this what he is referring to ?
    Attached Thumbnails Attached Thumbnails dscn2212-jpg  

  2. #2
    Member frank_nesta's Avatar
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    Quote Originally Posted by gug View Post
    I'm having a custom builder build a 406/454hp engine for me to put in my 1974 vette. He has found a aluminum intake and asked me if my current engine had a "mushroom type" EGR on it. This is all located on the passenger side of the Carb. I believe my does have the choke system on the passenger side that he wants and the EGR that he wants. He has also asked if there is two small lines that go into the intake and I do ( I think) have what he wants but I'm not sure. Included is a picture of my carb taken from he driver's side. To the right side (back side of the carb) you see a dull silver tubular thing and it has two lines going into it. Is this what he is referring to ?
    The 2 lines in your picture are manifold vacuum. If that is what he is asking about then the answer is yes. If the lines he is asking about is not manifold vacuum the answer is no.

  3. #3
    Member Vettehead Mikey's Avatar
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    Will this new intake fit under the hood? Many won't.

  4. #4
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    Quote Originally Posted by Vettehead Mikey View Post
    Will this new intake fit under the hood? Many won't.
    I did not ask this question but I strongly feel that the individual building the engine would not have suggested it if it would not.

  5. #5
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    Quote Originally Posted by frank_nesta View Post
    The 2 lines in your picture are manifold vacuum. If that is what he is asking about then the answer is yes. If the lines he is asking about is not manifold vacuum the answer is no.
    Thanks Frank for the info. I'll be talking to him this morning. Appreciate the help!!!!!!!!!!!

  6. #6
    Member Vettehead Mikey's Avatar
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    Quote Originally Posted by gug View Post
    I did not ask this question but I strongly feel that the individual building the engine would not have suggested it if it would not.
    Most engine builder don't have a clue about hood clearance. It's pretty much a Corvette only issue.

  7. #7
    Member frank_nesta's Avatar
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    Quote Originally Posted by gug View Post
    I did not ask this question but I strongly feel that the individual building the engine would not have suggested it if it would not.
    Make sure the deck height is the same on both.

  8. #8
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    Mikey's right–most engine builders have no understanding of hood clearance on BB Vettes.

    There was no factory aluminum intake manifold for a Big-Block in 1974. There are only two aluminum intake manifolds which will fit under the hood of 74 BB C3:

    The 1968-1969 3x2 oval port manifold from the 427/400
    The aftermarket, Edelbrock Torker II

    Neither of those will accept EGR.

    If you want an aluminum intake, I'd either take off the EGR and go with the Torker II or put an L88 hood on the car and use an Edelbrock Performer RPM.

  9. #9
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    Quote Originally Posted by gug View Post
    I'm having a custom builder build a 406/454hp engine for me to put in my 1974 vette.
    I could be wrong but doesn't the 406/454hp mean it is a SB??

  10. #10
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    Quote Originally Posted by kpic View Post
    I could be wrong but doesn't the 406/454hp mean it is a SB??
    Oopsey!

    "kpic" is right. I didn't read the OP correctly. A 406 is likely a small block but the problem remains the same–hood clearance with some aftermarket manifolds.

    The stock LT1 intake will fit right air filter assembly.
    A Performer RPM may fit given the right air filter assy.

    A 450-hp SBV8 is going to need a good intake manifold to use that power. The Performer RPM is the way to go.
    Last edited by Hib Halverson; 11-18-14 at 12:12 PM. Reason: spelling

  11. #11
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    Clearing the carb or being able to close the hood, is how my 66 ended up with an aftermarket 427 hood "scoop."

    Fortunately, back home my best bud owns a collision shop and is a painter.
    Whoosh, and blur

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