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Hot Rods 241 hemi owners...too much

Discussion in 'The Hokey Ass Message Board' started by silent rick, Aug 10, 2018.

  1. silent rick
    Joined: Nov 7, 2002
    Posts: 3,722

    silent rick
    Member

    i don't think my 241 will clean up at .060 and if that's the case, i will need custom pistons. except for costing twice as much, it's not such a bad thing. it means i can run any compression ratio i want.
    so a fresh built, 10:1 compression, regind on the cam and a hotter ignition...will this intake be too much? i have 4 97's for it.
    i know on huge chryslers this intake isn't a problem. has anyone ever gotten this intake to perform well on the street using it on a 241-270 dodge?

    [​IMG]
     
    Deuces likes this.
  2. RichFox
    Joined: Dec 3, 2006
    Posts: 9,317

    RichFox
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    54 years ago I ran four 97s on a log mainafold on a 259 inch '54 Dodge engine. In a very light stick shift car. Worked good. I thought at the time. As you know "The older we get, the faster we were."
     
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  3. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 8,493

    Rusty O'Toole
    Member

    That is a lot of carburetors for such a small engine. Would suggest small carburetors or, I wonder if you could run 2 carbs and block off the other 2?
     
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  4. silent rick
    Joined: Nov 7, 2002
    Posts: 3,722

    silent rick
    Member

    i think i'd have to go .125 to get to 259
     
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  5. silent rick
    Joined: Nov 7, 2002
    Posts: 3,722

    silent rick
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    if i could block off two, i'd run progressive linkage
     
  6. silent rick
    Joined: Nov 7, 2002
    Posts: 3,722

    silent rick
    Member

    ol tex says that although they look it, you can't run progressive on these
     
  7. Dan Timberlake
    Joined: Apr 28, 2010
    Posts: 1,206

    Dan Timberlake
    Member

    In some of the pictures it almost looks like the "plenum" under each carb is divided.

    But then there are what look like sizeable "balance" passages running fore and aft between the carbs.
    It would be interesting to how Why-and designed that thing.

    Is there a heated crossover ?
     
  8. RichFox
    Joined: Dec 3, 2006
    Posts: 9,317

    RichFox
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    I know I did. Stock '55 Plymouth bore.
     
  9. Marty Strode
    Joined: Apr 28, 2011
    Posts: 3,622

    Marty Strode
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    It's too bad they don't reproduce 81's they would be perfect for this application, originals are hard to find.
     
  10. 34Phil
    Joined: Sep 12, 2016
    Posts: 138

    34Phil

    gasket over the iron base that blocks one bore?
     
  11. tubman
    Joined: May 16, 2007
    Posts: 3,734

    tubman
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    That manifold will only fit the "low block" dodges, which means that the largest engine it could have been used on is a 270". I would have to think that even back in the old days they wouldn't have designed a manifold that was unsuited for its intended purpose. I'd try it like it is. I do like the idea of 81's, though.
     
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  12. RichFox
    Joined: Dec 3, 2006
    Posts: 9,317

    RichFox
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    But it's intended purpose may well have been competition use. What works well at El Mirage and Bonneville, may not be suitable in a heavier car with an automatic used as a a family transportation car.
     
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  13. silent rick
    Joined: Nov 7, 2002
    Posts: 3,722

    silent rick
    Member

    it's going in a 27 T modified with a quickchange
     
  14. silent rick
    Joined: Nov 7, 2002
    Posts: 3,722

    silent rick
    Member

    in tex smith's book a complete guide to hemis, he talks about running straight linkage. he said although they look like you could run progressive, there isn't adequate plenum to do so. i was hoping someone on here gave it a try.
     
  15. If your going to cut more than .060 I'd have a sonic test done to make sure your still in good shape for wall thickness. I have one of those motors that had water pits from sitting in bad conditions. My machinist (Earl Floyd & Jim Albrich) chose to sleeve 2 cyl's and stop at .040 instead of going .080 to get clean.
    The Wizzard
     
  16. silent rick
    Joined: Nov 7, 2002
    Posts: 3,722

    silent rick
    Member

    sort of like nascar restrictor plates?
     
  17. Squablow
    Joined: Apr 26, 2005
    Posts: 13,348

    Squablow
    Member

    If it won't clean up at .060 it might be worth looking for a '56 270 poly block to start with, that way you get the good side mounts and a few more cubes, everything else you can reuse from your current setup. A few extra cubes will help use up what those extra carbs are dishing out, and poly blocks are pretty common and relatively cheap yet. Could get a '55 block if you want to use the front mounts I suppose, for looks. The bigger block would probably be cheaper than custom pistons for the smaller engine anyway.
     
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  18. tubman
    Joined: May 16, 2007
    Posts: 3,734

    tubman
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    I remember seeing an article (maybe it was a thread on here) where a guy went through all it took to get "four-in-a-row" to run properly on a Chrysler. If you can find it, it may be a good starting point.

    "Rich Fox" - A guy who would try to run one of these on "a heavier car with an automatic" deserves all the problems he'll be getting. There are always some of that type around for some reason.
     
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  19. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 8,493

    Rusty O'Toole
    Member

    Maybe you could get a couple of these and flip them upside down.

    [​IMG]
     
  20. silent rick
    Joined: Nov 7, 2002
    Posts: 3,722

    silent rick
    Member

    ok, so i improved the situation a little. i just found a 259 truck block on ebay for 10 bucks. it might take me a month to pick it up. i know it will go to 270.
    i still plan on custom pistons to get the compression ratio up. i'm hoping with 29 more mouths to feed...err, i mean cubic inches, it might make a difference.
    what i didn't tell you guys is i have an offenhauser 3x2 to fall back on but for some unknown reason, i really want to run the weiand. it will match the one i have on a t-shirt.
     
  21. greg32
    Joined: Jun 21, 2007
    Posts: 1,737

    greg32
    Member
    from lemont,IL

    silent rick likes this.
  22. killbilly
    Joined: Mar 29, 2009
    Posts: 185

    killbilly
    Member

    It might be easier to just get another t shirt....
     
  23. sunbeam
    Joined: Oct 22, 2010
    Posts: 3,483

    sunbeam
    Member

    I have bored 241s for sleeves .269 and did not hit water.
     

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