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  1. #1
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    Default COME replacement holden v8 iron block

    So for those that don't have Facebook, yesterday COME announced that the first test casting for a replacement Iron block was complete.
    Said to have features as siamesed bore with sizes up to 4.125", clearance for 4" stroke cranks (440+ cubes), thicker deck, 6 bolt head stud provisions, 4 bolt stepped centre main bearing caps and the obvious one priority main oiling.

    Will be interested to see what price they come in at, cause I don't think they will aimed as a direct competitor with the Little Paw, more a direct replacement for your GM cast Holden V8 that everything will bolt up to exactly the same with some nice features.
    Would also like to know where they will be made? China like their cranks?

    https://www.comeracing.com/news/2019...cylinder-block




  2. #2
    Do you ever leave? paulzig's Avatar
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    Its a niche market, its Australia only, the costs will be up there to manufacture.. It will be out of reach for most in comparison to a Dart/World block for Chev, Ford or LS..

    Hopefully it wont be something ridiculous like 5K + for the block, when Dart SHP is around half that...

  3. #3
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    yeah the cost will make or break it..

  4. #4
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    I can't imagine that they will be cheap particularly as they will be for a limited market. Their alloy block was a really good idea apart from the price.
    I'm not sure reading between the lines whether or not they will reintroduce the alloy block. If they could bring down the price perhaps there would
    be more interest.
    My vh has had it's vp v8 engine in it for 20 of the 22 years I have owned it. If I was starting now with a conversion it would be with an ls3 motor.

  5. #5
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    If it's over 4g, I reckon it will too expensive for the targeted market

    Sent from my SM-G950F using Tapatalk

  6. #6
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    Looks like the bore spacing's are different so you would be up for a crank as well. If that is correct the heads wouldn't line up as well.
    Jaguar did it when they went from the 3.8 to the 4.2 with different bore spacing's. It seemed to work for them.

  7. #7
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    Quote Originally Posted by keith reed View Post
    Looks like the bore spacing's are different so you would be up for a crank as well. If that is correct the heads wouldn't line up as well.
    Jaguar did it when they went from the 3.8 to the 4.2 with different bore spacing's. It seemed to work for them.
    I think it just appears like that because they are siamised
    The block will accept any replacement or OEM oil pans, timing cases, cylinder heads, intake manifolds, camshafts, engine mounts, oil pumps etc.

  8. #8
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    HI
    Need a racing version with ALL the fruit 1000hp plus and a 600-700hp similar to the SHP Dart block ..

    If its not below 3000 for a base the LS or early chevs look good . Doable but price will tell the story.

    eg Blue print sells a chev bottom end 400 not that pricey either . Typically not available to much in this country because of the resellers.

    Then we get to the heads to feed these new Holden 400 cuin many dollars $$$$$$
    Last edited by swampy; 20-02-2019 at 04:31 PM.

  9. #9
    Do you ever leave? paulzig's Avatar
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    Quote Originally Posted by swampy View Post
    HI


    Then we get to the heads to feed these new Holden 400 cuin many dollars $$$$$$
    Well, If you did the typical 4.155 bore x 3.75 stroke, a VN head with 2.02 or 2.055 valve could make good power up to 7500RPM on a 400.. You wouldnt even need an extremely radical porting job.. You could be in the heads for $2000-2500 ready to bolt on..

  10. #10
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    Cheaper and easier to cast and machine alloy rather than iron so I'm thinking this is about sales of the alloy block being lousy.

    I estimate it will be priced similar to the TP block, no point being half the price if you only have one competitor.

  11. #11
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    Quote Originally Posted by guy incognito View Post
    Cheaper and easier to cast and machine alloy rather than iron so I'm thinking this is about sales of the alloy block being lousy.

    I estimate it will be priced similar to the TP block, no point being half the price if you only have one competitor.
    I think the price of their alloy blocks would have been the problem. From memory they were $12,000

  12. #12
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    Quote Originally Posted by paulzig View Post
    Well, If you did the typical 4.155 bore x 3.75 stroke, a VN head with 2.02 or 2.055 valve could make good power up to 7500RPM on a 400.. You wouldnt even need an extremely radical porting job.. You could be in the heads for $2000-2500 ready to bolt on..
    What sort of power are you thinking with that setup?

  13. #13
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    I estimate between 5-5500 for the block to just come in under the TP price.

  14. #14
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    Quote Originally Posted by EH179 View Post
    What sort of power are you thinking with that setup?
    waste.. spend all that cash then put those on it. Better with. 230cc heads, 2.15in In, 1.625in Ex. 260@0.050 solid-roller. 0.750in lift, some kind of 950.. Braswell?

    be pretty close to 2HP per cubic inch.

  15. #15
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    Quote Originally Posted by EH179 View Post
    I estimate between 5-5500 for the block to just come in under the TP price.
    If that was the case I would spend the extra $1000 and get a Little Paw

    Sent from my SM-G950F using Tapatalk

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