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Technical Bored and Stroked - No Replacement for Displacement

Discussion in 'The Hokey Ass Message Board' started by blowby, Nov 10, 2018.

  1. blowby
    Joined: Dec 27, 2012
    Posts: 4,963

    blowby
    Member
    from Nicasio Ca

    Crank swaps, offset grinding, sleaving, tall decks... What's the largest you know of any Hamb era engine being opened up to, and how? Flatheads, Caddys, MELs, SBCs, Olds, Mopar..

    400 SBC were around long before the factory version, right?
     
  2. saltflats
    Joined: Aug 14, 2007
    Posts: 8,607

    saltflats
    Member
    from Missouri

    The 409 I ran this year is .100 over bore and a 427 crank. Came out to 460 inches.
     
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  3. To lazy to find it. 283 SBC with a displacement of 350 maybe plus.
    Edit- Found it! Posted by Speed Gems from FalconGeorge.
    [​IMG]
     
    Last edited: Nov 10, 2018
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  4. RmK57
    Joined: Dec 31, 2008
    Posts: 654

    RmK57
    Member

    Take any 429 Ford, bore it .080 and stick in a 4.50 stroke crank for 557 cubic inches.:cool:
     
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  5. Fordors
    Joined: Sep 22, 2016
    Posts: 1,269

    Fordors
    Member

    Sorry, but the Ford 385 Series engines miss the HAMB mark by a few years.
    I think the 283/402 with it’s 119 inch increase over stock might be the overall winner, but maybe someone knows of another. When you think about it stuffing a four inch crank in an early, small journal Chevy block it's pretty impressive.
     
    Last edited: Nov 10, 2018
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  6. RichFox
    Joined: Dec 3, 2006
    Posts: 9,282

    RichFox
    ALLIANCE MEMBER

    Lot of Chryslers ran at 456 cid. Mel engines at 508
     
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  7. Larry T
    Joined: Nov 24, 2004
    Posts: 8,235

    Larry T
    Member

    Don Montgomery talks about 460" Olds and 360" Small Block Chevys in his Supercharged Gasser book. I think he mentions even bigger Cadillac and Lincoln engines (around 500 inches), but I can't find it right now so...............
     
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  8. 41rodderz
    Joined: Sep 27, 2010
    Posts: 903

    41rodderz
    Member
    from Oregon

    Great question. I am interested in seeing all the responses from my fellow hambers. My ears are wide open. Let's hear them.
     
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  9. ^^^^^ I don't hear a thing here. ;)
     
  10. saltflats
    Joined: Aug 14, 2007
    Posts: 8,607

    saltflats
    Member
    from Missouri

  11. ^^^^^ I didn't hear what size it was. But I could see it. ;)
     
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  12. saltflats
    Joined: Aug 14, 2007
    Posts: 8,607

    saltflats
    Member
    from Missouri

     
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  13. RichFox
    Joined: Dec 3, 2006
    Posts: 9,282

    RichFox
    ALLIANCE MEMBER

    But what's cooler, if you ask me, is if you put a 317 Lincoln crank in a .060 over 368 you get a 363. Nice for SCTA "C" classes. And if you put a 55 Pontiac crank in a 331 Chrysler you get a 300 inch class "D" engine. And yes you can put a Pontiac crank in a Chrysler if you really want to. More is not always better if you want to make class,
     
    Last edited: Nov 10, 2018
  14. chevy57dude
    Joined: Dec 10, 2007
    Posts: 4,414

    chevy57dude
    Member

    [​IMG]
    1965 was the banner year for the Mark IV Chevrolet engines.
    489 cubic inch big block Chevy
    It's a 454, bored out to 4.280 (.030 over stock 4.25)
    Stroker 4130 crank: 4.25 inch (stock is 4.00)
     
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  15. G-son
    Joined: Dec 19, 2012
    Posts: 383

    G-son
    Member
    from Sweden

    Displacement is nice, but rather useless if you don't have the matching flow past ports, valves etc. to fill and evacuate those big cylinders quick enough. There are plenty of big displacement low power engines out there as a result of cylinder heads etc. that just doesn't let the engine breathe.
     
  16. Kerrynzl
    Joined: Jun 20, 2010
    Posts: 1,730

    Kerrynzl
    Member

    Depends on how much of the original engine you want to keep!
    Take a 1956 Chevy 265 block [casting #3720991] and cut away everything around the casting numbers and date code.
    Replace everything cut away with donor parts from a "Dart" block [this requires welding and cleaning up]

    Bore out to 4.155 inches and add a 4.125 inch stroker crank to get 447 cu in. [a whopping 182" increase] and HAMB friendly due to it being 1956 build with modern mods

    A perfect engine for entering into historic racing [It's called innovation until you get caught:D]
     
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  17. DDDenny
    Joined: Feb 6, 2015
    Posts: 9,895

    DDDenny
    Member
    from oregon

    Kerry
    If I thought it wouldn't get the boot (again) I'd photoshop a shot of my aluminum 427 Rodeck small block painted Chevrolet orange.
    Would anyone notice? Probably not! Would anyone complain? Probably!
     
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  18. Kerrynzl
    Joined: Jun 20, 2010
    Posts: 1,730

    Kerrynzl
    Member

    I wouldn't complain on the HAMB

    A formal protest maybe :D.
    "I know he's cheatin' cause I'm cheatin' and he beat me"
     
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  19. RmK57
    Joined: Dec 31, 2008
    Posts: 654

    RmK57
    Member

    Didn't the 454 come out in 1970?
     
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  20. chevy57dude
    Joined: Dec 10, 2007
    Posts: 4,414

    chevy57dude
    Member

    Yes. If mine doesn't fit I'll delete.
    A 396 would be the only actual HAMB era BBC
    427 was a 1966 engine.
    454 in '70
    after that who cares...
     
    Last edited: Nov 10, 2018
  21. RmK57
    Joined: Dec 31, 2008
    Posts: 654

    RmK57
    Member

    It's old enough for me. Iv'e got a 514 BBF in the 57 on my avatar.
     
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  22. DDDenny
    Joined: Feb 6, 2015
    Posts: 9,895

    DDDenny
    Member
    from oregon

    The 402 might sneak under the radar too.

    Some background here, can't vouch for its accuracy.


    https://itstillruns.com/history-chevy-402-engine-7750247.html
     
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  23. blowby
    Joined: Dec 27, 2012
    Posts: 4,963

    blowby
    Member
    from Nicasio Ca

    At the other end of the spectrum: The v8-60 in my heap sports a whopping 136 cubes. Being a 1940 block, it has removable sleeves from the factory (supposedly instead of boring, you just knocked in a new sleeve and slug, ready to run). These can be removed and pistons run directly on the block. Also the 1940 crank had larger rod journals. Offset grind with the 37-39 rods and I believe it's around 180 cubes.

    But, what's the point? More of the big brother flatties around anyway.
    1024181546.jpg
     
    Last edited: Nov 11, 2018
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  24. tjm73
    Joined: Feb 17, 2006
    Posts: 3,244

    tjm73
    Member

  25. In 1962,Johnnie Hart of Portland,Oregon set the d/dragster record with a 354 cube flathead Ford v8 that had a 4 3/4 in STROKE and ran 122 mph in 11.23 seconds. That stroke is a 1 in increase over a stock 3 3/4 stroke. I do NOT know what the bore size was? Flatheads Forever! 7786DD3A-B75C-44DF-87F1-62CB983501BB.jpeg 8E87BB8C-29E1-421D-8B62-B00BBCDC909A.jpeg
     
  26. choffman41
    Joined: Oct 30, 2012
    Posts: 2,038

    choffman41
    Member

    Cubic inches are great, but cubic dollars usually prevail.
     
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  27. WanatahHustler
    Joined: Jul 28, 2018
    Posts: 12

    WanatahHustler
    Member

    11.20s with a Flatty is FAST! Alot of cars now dont even come close to that number.

    Sent from my SM-G950U using The H.A.M.B. mobile app
     
  28. 3 7/16" Bore = 352.66
    A Big Flathead, I remember in a Rodders Journal there was talk of a Flathead that was 427 cid? with tractor sleeves & a fabricated 5"? Stroke
     
  29. I remember reading an article in an early Hot Rod magazine (I think) that in the early sixty's Chet Herbert took some 283 Chev engines and completely bored the cylinders out of the block and pressed in sleeves and with the biggest stroker crank he could make wound up with 454 cu. in.
     

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