Yet AGAIN more W2 360 talk

Small Block Mopar Engine

  1. Krooser

    Krooser Building Chinese Free Engines since 1959...

    Messages:
    3,490
    Likes Received:
    3070
    Joined:
    Jul 19, 2015
    Location:
    Central Wisconsin
    Local Time:
    5:00 AM

    The issue you will have with any SBM is crank weight. My billet 3.79 crank weighs 63#'s. Stock 3.31 crank is 57#'s as I recall. The typical SBC dirt racer can get a a 39# crank...makes a ton of difference.

    I tried to get a lighter crank built... talked to SCAT, Windberg and Bryant. Lightest they build is over 50#'s. Six month wait. And several thousand dollars.

    I'd spend my money elsewhere.

    BTW I have a 13.5-1, 388" 360 with W2 heads running on moonshine. Crower billet rods. RaceTec pistons. The next build will be a 340 +.060 with a 3.79 crank, Brodix B1BA-MC heads.
     
    • Like Like x 2
    • PRH

      PRH Well-Known Member

      Messages:
      4,224
      Likes Received:
      6249
      Joined:
      Dec 14, 2018
      Location:
      So. Burlington, Vt
      Local Time:
      6:00 AM
      I think W9 is code for:
      “Ka-ching”
      :usflag:
       
      • Agree Agree x 5
      • Like Like x 1
      • rumblefish360

        rumblefish360 I have escaped the evil Empire State! FABO Gold Member

        Messages:
        44,137
        Likes Received:
        16301
        Joined:
        Jun 21, 2005
        Location:
        Florida
        Local Time:
        6:00 AM
        W-7-8-9, KA-CHING!
        Big power, port & flow numbers are possible!
        CFM - 380+
        Give me a Rick Flare,
        Woooooooooooooooooooooooo!!!!!!!!
         
        • Like Like x 1
        • gagembassett

          gagembassett FABO Gold Member FABO Gold Member

          Messages:
          251
          Likes Received:
          183
          Joined:
          Oct 27, 2021
          Location:
          Iowa
          Local Time:
          5:00 AM
          I'm not overly terrified about the crank weight for 7,000 rpm on the 3.58 stroke. I feel pretty confident that everything will be happy there for a higher compression ratio plus the rpm level. I'm planning on going with a Bryant crank and K1 H-beam rods
           
          Last edited: May 11, 2022
        • gagembassett

          gagembassett FABO Gold Member FABO Gold Member

          Messages:
          251
          Likes Received:
          183
          Joined:
          Oct 27, 2021
          Location:
          Iowa
          Local Time:
          5:00 AM
          out of curiosity, what is the octance rating of your moonshine? Is it a substitute you use for methanol?
           
        • 19DUSTER73

          19DUSTER73 Well-Known Member

          Messages:
          344
          Likes Received:
          334
          Joined:
          May 29, 2010
          Location:
          Chehalis, WA
          Local Time:
          3:00 AM
          I'm guessing but I'd bet his moonshine is E98
           
        • Krooser

          Krooser Building Chinese Free Engines since 1959...

          Messages:
          3,490
          Likes Received:
          3070
          Joined:
          Jul 19, 2015
          Location:
          Central Wisconsin
          Local Time:
          5:00 AM
          We run methanol....
           
        • gagembassett

          gagembassett FABO Gold Member FABO Gold Member

          Messages:
          251
          Likes Received:
          183
          Joined:
          Oct 27, 2021
          Location:
          Iowa
          Local Time:
          5:00 AM
          so moonshine is your methanol or? I'm confused now
           
        • Jarlaxle

          Jarlaxle Well-Known Member

          Messages:
          1,986
          Likes Received:
          693
          Joined:
          May 18, 2013
          Location:
          New England
          Local Time:
          6:00 AM
          I thought trucks went to the 5x5.5" lug pattern in 1981...?

          For the Dana, check with the hardcore Jeep guys. Pretty sure some of them run 5-lug D60 in the back of a CJ or Wrangler.

          You should also seriously consider a built 9.25", especially in a pickup. (Heck...it was probably built with one.) Maybe 95% as strong as a Dana, but much less cost and lighter. If you need a core to build, they're still abundant in junkyards, everything from Dakotas to 1-ton vans.
           
        • Jarlaxle

          Jarlaxle Well-Known Member

          Messages:
          1,986
          Likes Received:
          693
          Joined:
          May 18, 2013
          Location:
          New England
          Local Time:
          6:00 AM
          I have to admit...600hp and 7000RPM (even without the stroker crank) on ANY stock LA block (even a TA) would terrify me. With a 3.79" stroke, that's over 4400fpm...that is NASCAR piston speeds, on a production 360 block. I'd spend the money on an R block before a pair of W9 heads.

          Dodge R5 P7 r5p7 mopar bare engine block new or used bushed nascar motors 358 | eBay
           
        • gagembassett

          gagembassett FABO Gold Member FABO Gold Member

          Messages:
          251
          Likes Received:
          183
          Joined:
          Oct 27, 2021
          Location:
          Iowa
          Local Time:
          5:00 AM
          Switched back to a stock 3.58" stroke. Not sure what those pistons' speeds would be without breaking out the math book. I feel confident about it as I've seen and talked with a few guys that have run 340s with stock stroke and old heavy TRW slugs up to 8,500+ rpm. Nonetheless I completely understand your point. I have thought about an R block. If I do stay with the factory block it will be very well prepared by a professional.
           
        • Jarlaxle

          Jarlaxle Well-Known Member

          Messages:
          1,986
          Likes Received:
          693
          Joined:
          May 18, 2013
          Location:
          New England
          Local Time:
          6:00 AM
          Forged steel crank?
           
        • gagembassett

          gagembassett FABO Gold Member FABO Gold Member

          Messages:
          251
          Likes Received:
          183
          Joined:
          Oct 27, 2021
          Location:
          Iowa
          Local Time:
          5:00 AM
          It's going to be a Sonny Bryant crank so yes, top-shelf forged crank
           
        • rumblefish360

          rumblefish360 I have escaped the evil Empire State! FABO Gold Member

          Messages:
          44,137
          Likes Received:
          16301
          Joined:
          Jun 21, 2005
          Location:
          Florida
          Local Time:
          6:00 AM
          That’s top notch stuff! Oh yea!
           
        • Krooser

          Krooser Building Chinese Free Engines since 1959...

          Messages:
          3,490
          Likes Received:
          3070
          Joined:
          Jul 19, 2015
          Location:
          Central Wisconsin
          Local Time:
          5:00 AM
          Yah...we drink wood alkyhaul fer brekfest neer everydey...and run it in are racekars, tooo.
           
          • Like Like x 2
          • Krooser

            Krooser Building Chinese Free Engines since 1959...

            Messages:
            3,490
            Likes Received:
            3070
            Joined:
            Jul 19, 2015
            Location:
            Central Wisconsin
            Local Time:
            5:00 AM
            Well I kinda agree especially on an endurance application like mine. The hot ticket would be big bore/ short stroke but the only block that comes close is an overbored 340 unless you have a race block.

            I am not a big fan of these 408+ engines especially with heads that can't supply enough air. I would want at least 330+ cfm on my race motor if I went that big.

            My son used to maintain a friends large muscle car collection. I drove one of the 408/4speed Darts in the collection... Not impressed. Just my opinion.
             
          • Krooser

            Krooser Building Chinese Free Engines since 1959...

            Messages:
            3,490
            Likes Received:
            3070
            Joined:
            Jul 19, 2015
            Location:
            Central Wisconsin
            Local Time:
            5:00 AM
            Six month lead time with a 50% deposit. Same as Windberg. Scat is quicker and a bit cheaper but not the same Timken steel as I recall.
             
          • Jarlaxle

            Jarlaxle Well-Known Member

            Messages:
            1,986
            Likes Received:
            693
            Joined:
            May 18, 2013
            Location:
            New England
            Local Time:
            6:00 AM
            Heads are always the key on s stroker.
             
          • rumblefish360

            rumblefish360 I have escaped the evil Empire State! FABO Gold Member

            Messages:
            44,137
            Likes Received:
            16301
            Joined:
            Jun 21, 2005
            Location:
            Florida
            Local Time:
            6:00 AM
            Heads are key on any engine, LOL.
            :thumbsup:
             
          1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
            By continuing to use this site, you are consenting to our use of cookies.