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Technical 402 Cubic Inches From A 283?

Discussion in 'The Hokey Ass Message Board' started by Speed Gems, Jan 9, 2016.

  1. Speed Gems
    Joined: Jul 17, 2012
    Posts: 6,433

    Speed Gems
    Member

    As a Christmas present to myself this year I bought a stack of old HOT ROD magazines. One of the articles that caught my attention that I'm currently reading is in the May 1960 issue of Hot Rod magazine where a guy named Lawrence Jewel of the Jewel Tool Co. of Taylor Michigan Bored and stroked a 283 out to 402 cubic inches using a set of short skirt Grant pistons and Buick rods. Sorry I don't have a scanner or I'd scan the article for you guys.:( I've done a search and read about all the other 301" and 352" combos but I thought I'd throw this one out for discussion because I thought it was interesting.
     
    Last edited: Jan 9, 2016
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  2. blue 49
    Joined: Dec 24, 2006
    Posts: 1,820

    blue 49
    Member
    from Iowa

    Comes out to a 4" bore stroked to 4". I knew they were doing 4" stroke large journal cranks now, but I thought you needed a raised cam, aftermarket block.

    Gary
     
  3. Wow! Can you really get that many cubes from an older 283 block (1960)? Tim
     
  4. Speed Gems
    Joined: Jul 17, 2012
    Posts: 6,433

    Speed Gems
    Member

    I don't think they had large journal or aftermarket blocks back in '60.
     

  5. Speed Gems
    Joined: Jul 17, 2012
    Posts: 6,433

    Speed Gems
    Member

    Last edited: Jan 10, 2016
  6. Speed Gems
    Joined: Jul 17, 2012
    Posts: 6,433

    Speed Gems
    Member

    Here's a scan of the article from another thread thanks to @falcongeorge. may60.jpg may60 01.jpg may60 02.jpg may60 03.jpg may60 04.jpg may60 05.jpg
     
    Last edited: Jan 10, 2016
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  7. Tim
    Joined: Mar 2, 2001
    Posts: 17,086

    Tim
    Member
    from KCMO

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  8. DDDenny
    Joined: Feb 6, 2015
    Posts: 19,132

    DDDenny
    Member
    from oregon

    Leave it to George, his old magazine cache must be uuuge.
    That's a big sumbitch, with a 283 block.
    I had to get creative getting 427 inches out of my aluminum Rodeck Small block.
    I know a 454 is doable with a 400 based small block.
     
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  9. DDDenny
    Joined: Feb 6, 2015
    Posts: 19,132

    DDDenny
    Member
    from oregon

    Check out the text in that first photo, $600 for a billet crank.
    You'll never see those days again!
     
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  10. Speed Gems
    Joined: Jul 17, 2012
    Posts: 6,433

    Speed Gems
    Member

    Bump for the morning crowd.
     
  11. belair
    Joined: Jul 10, 2006
    Posts: 9,013

    belair
    Member

    When someone asks "Whatchagot?", You could say "It's just a punched out 283." Use Corvette or script valve covers and paint all the aluminum parts orange. But I bet the money would be equivalent to building a 400 hp flat head. But so cool.
     
  12. sunbeam
    Joined: Oct 22, 2010
    Posts: 6,213

    sunbeam
    Member

    Just using the change in minimum wage from 1960 that would make the crank $4350 today.
     
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  13. bubba55
    Joined: Feb 27, 2011
    Posts: 452

    bubba55
    Member

    Not if it was made in china
     
  14. I saw that.

    To answer a question about cam location and long strokes, they used to use a cam shaft with a smaller base circle. Some guys still do that to build displacement with a stock block.

    Another thing that I have seen done although I have never done it myself is to align bore the cam journals off setting them and using a thicker cam bushing with an offset hole. it effectively moves cam shaft without going to an after market block.
     
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  15. indyjps
    Joined: Feb 21, 2007
    Posts: 5,377

    indyjps
    Member

    434 is a common stroker, 4 inch crank, 400 block .030 over.

    4 inch stroke crank with mains turned down for 283 block is possible, need a good radius journal. Won't be the strongest crank. Block should probably get a 1/2 fill with hardblock to keep from hitting water when the pan rails are clearanced.
    Pistons ??? 6 inch rod and 5.85 rod pistons for 4 inch stroke 400 and 350 blocks are available off the shelf, getting them for a 283 will depend on how far you can bore it, or a custom set.
    Aftermarket clearanced rods are available to use 4 inch cranks, that and/or small base circle cams are common with that crank. Circle track guys have been doing it for at least 20 years.

    I've got a Molex 4 inch stroke crank with 350 mains sitting on the shelf, don't have a real plan for it, maybe this.
    http://www.hotrod.com/how-to/engine/0805phr-408-cubic-inches-with-a-350-block/
     
    Last edited: Jan 10, 2016
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  16. Building a big inch motor with a late block is relatively easy.

    Building one that far in '60 with what was available was a real feat. I can call skat for example and order a crank in the stroke that I desire, I can buy rods after market that are long enough to clear my crank throws and short skirt pistons are readily available as well. A stock block is already 4" and can go out to 4.060 easy enough, and that is not going with a 400 block which these days is basically unobtainium.

    '60 it was all new tech and it took more than just liquid assets to do it. Hell it hasn't been that many years back that we were modifying Ford 300" six rods to work in our small blocks because they were 6" rods.
     
    Last edited: Jan 10, 2016
  17. Speed Gems
    Joined: Jul 17, 2012
    Posts: 6,433

    Speed Gems
    Member

    That's a pretty good chunk of change considering you could buy a whole car back then for just a couple thousand dollars.
     
  18. indyjps
    Joined: Feb 21, 2007
    Posts: 5,377

    indyjps
    Member

    I agree the guys figuring this out in the 60's by offset grinding cranks and modding other engine makes parts were amazing.

    Speed Gems opened it up for discussion, it's very possible today with mostly off the shelf parts, but a lot of good machine work and probably a big slug of Mallory to balance it up.

    I'd love to see a big incher in a front mount 283 block. The only 283's I have are later blocks.

    Beaner, I've built a 6 inch oldsmobile 350 rod in a sbc with bushed pins, set of used j&e pistons was the only way I could afford it. Tell more about the ford 300 rods, never heard that one.
     
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  19. belair
    Joined: Jul 10, 2006
    Posts: 9,013

    belair
    Member

    I remember that^^^^^
     
  20. falcongeorge
    Joined: Aug 26, 2010
    Posts: 18,341

    falcongeorge
    Member
    from BC

    I used the Olds rods back in the seventies in 377's.
     
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  21. sunbeam
    Joined: Oct 22, 2010
    Posts: 6,213

    sunbeam
    Member

    I built one used 300 6.2" off set bushed the pin ends to 6.25" and used off the shelf 400 6" rod pistons.What Hot Rod didn't tell you about was the $200 worth of heavy metal it took to balance the crank with those heavy rods.
     
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  22. Speed Gems
    Joined: Jul 17, 2012
    Posts: 6,433

    Speed Gems
    Member

    350%20article-1.jpg 350%20article-2.jpg 350%20article-3.jpg 350%20article-4.jpg 350%20article-5.jpg
     
    Last edited: Jan 10, 2016
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  23. henryj1951
    Joined: Sep 23, 2012
    Posts: 2,306

    henryj1951
    Member
    from USA

    findable for sale at egay
     

    Attached Files:

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  24. Speed Gems
    Joined: Jul 17, 2012
    Posts: 6,433

    Speed Gems
    Member

    That's the one.;)
     
  25. jcmarz
    Joined: Jan 10, 2010
    Posts: 4,631

    jcmarz
    Member
    from Chino, Ca

    I agree Pork. It amazes me what them guys were doing way back then. True engineering, American "Can Do" at it's best. Today, we are wimpy!
    r
     
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  26. frank spittle
    Joined: Jan 29, 2009
    Posts: 1,672

    frank spittle
    Member

    In 1960 a 352 c.i. stroker was a huge Chevy small block. It took cash the average Joe didn't have for one. 402...... wow
     
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  27. whtbaron
    Joined: Sep 12, 2012
    Posts: 579

    whtbaron
    Member
    from manitoba

    I remember reading (I think ) a Car Craft article back in the mid to late 70's about how to build a 500 plus cubic inch big block Chevy. At that time they used a bunch of truck engine parts to make it happen. Getting that kind of cubic inch out of a small block in the early 60's was a feat.
     
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  28. The big end needs to me shaved a little bit because the ford rods are wider at the journal, the diameter is close enough to the same size that once they are sized it is just a matter of juggling rod bearings ( 2.12 ford v 2.1 GM) The small end is bushed and floaters added.
     
  29. sunbeam
    Joined: Oct 22, 2010
    Posts: 6,213

    sunbeam
    Member

    Yes you had to start with a standard crank and turn it for .030 ford bearings. Now after market rods are the way to go. If you find 300 rods from 65 to 69 they have .912 piston pins and can be reamed to .927 chevy size, later rods have to be bushed.
     
    Last edited: Jan 10, 2016
  30. I think the later rods were a little bigger on the big end too as I recall.

    Rods have really come down in price as of late, well come down compared to wages and cost. The only reason to use a modified ford rod now would be that you already had them and had access to a machine shop.
     

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