can you use aluminium heads and intake on a 302cid cast iron block

Discussion in 'Parts Interchange' started by Dynaloves, Dec 14, 2014.

  1. Dynaloves

    Dynaloves Member

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    m rebuilding a 74 maverick too give it some more power I was thinking of putting a edlbrock top end kit on but im not sure if it would cause a chemical reaction or something like what some old guys told me can someone please help me clear this up
     
  2. MaverickDan

    MaverickDan I wanna go fast!!!

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    Yes you can use aluminum heads on an iron block. Car company's have been doing that for years.
     
  3. Dynaloves

    Dynaloves Member

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    Ok thanks I thought so because they put iron sleeves in aluminium blocks right?
     
  4. 71gold

    71gold Frank Cooper Supporting Member

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    most 302s that need rebuilt are changed out for a...5.0 roller...just a thought.
     
  5. Dynaloves

    Dynaloves Member

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    Like roller rocker arms lol
     
  6. bmcdaniel

    bmcdaniel Senile Member

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    Your 74 block (should have a D4 cast into the side) has an extra .026" added to the deck height to lower the compression. You should check into having that cut off, or like Frank said, pick up a newer 5.0 block. Also, the Edelbrock cams are horrible, there's much better to be had for less money. The heads and intakes are ok.
     
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  7. Crazy Larry

    Crazy Larry Member

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    The gaskets isolate the dissimilar metals, so it's not an issue.
     
  8. baddad457

    baddad457 Member

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    I've had aluminum heads on my 331 for ten years now, so whatever you were told was wrong. You do need to use the right gaskets though. I went with Feplpro's 9333 expanded graphite head gaskets liberally sprayed with copper kote. Nary a problem after all these years. I used their "Performance" gaskets with the same heads on a roller 302 block the first time and blew a gasket after four months.. Don't recall the part number on that gasket, but it was their "print-o-seal" .039" gasket.
     
  9. Dynaloves

    Dynaloves Member

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    Ok its a 73 block my bad.now how newer should I go. That's good to know about those cams
     
  10. Maxx Levell

    Maxx Levell Member

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    I think 86 and up should get you what you're looking for. Be sure and check first though..as I'm not positive. I'm sure someone who knows more about it than I do will chime in though...when I was looking for one at first, they told me what I needed to look for.
     
  11. Crazy Larry

    Crazy Larry Member

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    Just build your '73. Get some AFR aluminum heads if your budget allows. At least get a 4-barrel aluminum intake manifold, a good carb, a performance cam, and dual exhaust, along with electronic ignition.
     
  12. ESampson

    ESampson Member

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    never knew of that...curious if you know approx how much this would lower ones compression?
     
  13. baddad457

    baddad457 Member

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    That .026 equals about a quarter point in the ratio (just off the top of my head) The gasket is double that thickness, so it's like running a .065" head gasket
     
  14. baddad457

    baddad457 Member

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    All the roller 302 blocks from 86-2001 are the same, there are several different casting numbers, but they're all equal in terms of iron content. Don't bother looking for one from a Stang, you'll just pay more for the same part. Same blocks were used in all applications from 86-2001.
     
  15. Moneymaker 1

    Moneymaker 1 Green Street Beasts

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