The incredible W-2/355

Mopar Racers Forum

  1. Brooks James

    Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

    Messages:
    2,634
    Likes Received:
    1429
    Joined:
    Dec 12, 2020
    Location:
    Fruitland Park Fl
    Local Time:
    7:19 AM
    July 77
    I thought 355 were 360 destroke
    What Did the heads flow stock ?
    Heads fully ported, dressed ?

    0513220845_HDR.jpg

    0513220845a.jpg
     
    Last edited: May 13, 2022
    • Like Like x 2
    • Thanks! Thanks! x 1
    • A56

      A56 MoPar Affliction FABO Gold Member

      Messages:
      7,258
      Likes Received:
      21834
      Joined:
      Jun 24, 2014
      Location:
      White Oak, N.C.
      Local Time:
      5:19 AM
      Here :BangHead:
      upload_2022-5-13_9-40-34.jpeg
       
      • Thanks! Thanks! x 3
      • Like Like x 2
      • gzig5

        gzig5 Well-Known Member

        Messages:
        2,172
        Likes Received:
        2604
        Joined:
        May 3, 2018
        Location:
        Mequon, WI
        Local Time:
        6:19 AM
        I think I've seen a reference that stock W2 head flow about 250 on the intakes.
         
      • Scody21

        Scody21 Just send it

        Messages:
        1,561
        Likes Received:
        1794
        Joined:
        Jul 17, 2019
        Location:
        Southwest Washington Coast
        Local Time:
        4:19 AM
        It’s too bad the likes of trickflow won’t reproduce W-heads in aluminum…
         
        Last edited: May 14, 2022
        • Agree Agree x 1
        • pishta

          pishta I know I'm right....

          Messages:
          22,925
          Likes Received:
          12377
          Joined:
          Oct 13, 2004
          Location:
          Tustin, CA
          Local Time:
          4:19 AM
          I didnt know they ran mushroom lifters. Stroked 340's for bigger piston area.
           
          • Like Like x 1
          • Brooks James

            Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

            Messages:
            2,634
            Likes Received:
            1429
            Joined:
            Dec 12, 2020
            Location:
            Fruitland Park Fl
            Local Time:
            7:19 AM
            Jegs has them in iron $650 each bare. Im sssuming the cost of the rockers. Pushrod, Springs . , Valves, would make it more worthwhile to by a set of Trick Flow
             
          • K.O. SWINGER

            K.O. SWINGER Meeting in the alley since 1976

            Messages:
            2,719
            Likes Received:
            2609
            Joined:
            Nov 18, 2010
            Location:
            oregon
            Local Time:
            6:19 AM
            355 is not a destroked 360! no 360 parts on it. It's a slightly stroked 340, think the crankshaft was around 3.45 something stroke.
             
            Last edited: May 13, 2022
            • Like Like x 1
            • K.O. SWINGER

              K.O. SWINGER Meeting in the alley since 1976

              Messages:
              2,719
              Likes Received:
              2609
              Joined:
              Nov 18, 2010
              Location:
              oregon
              Local Time:
              6:19 AM
              Trickflowheads are not even in the same ballpark as a W-2 comparable as cast yes, but you're comparing a stock location push rod to a relocated push rod head no real comparison after a Max Porting job.
               
            • K.O. SWINGER

              K.O. SWINGER Meeting in the alley since 1976

              Messages:
              2,719
              Likes Received:
              2609
              Joined:
              Nov 18, 2010
              Location:
              oregon
              Local Time:
              6:19 AM
              The 355 was developed for the 360 cubic inch circle track racers. And was quite dominant in its time.
               
              • Thanks! Thanks! x 1
              • 79410aspenrt

                79410aspenrt Well-Known Member

                Messages:
                369
                Likes Received:
                379
                Joined:
                Nov 23, 2010
                Location:
                Saskatchewan
                Local Time:
                6:19 AM
                I have this crank in my 340. 3.46” stroke is what mine is. And I run W2 heads
                 
                • Like Like x 1
                • Thanks! Thanks! x 1
                • 79410aspenrt

                  79410aspenrt Well-Known Member

                  Messages:
                  369
                  Likes Received:
                  379
                  Joined:
                  Nov 23, 2010
                  Location:
                  Saskatchewan
                  Local Time:
                  6:19 AM
                  I’ll take the W2 over Trickflow. The W2 is a proven head and still going strong after all these years.
                   
                  • Like Like x 2
                  • K.O. SWINGER

                    K.O. SWINGER Meeting in the alley since 1976

                    Messages:
                    2,719
                    Likes Received:
                    2609
                    Joined:
                    Nov 18, 2010
                    Location:
                    oregon
                    Local Time:
                    6:19 AM
                    What a lot of people don't realize is the 355 W-2 motor won lot of big races including Sprint car world championship I think was kinzer behind the wheel and Richard Petty used the 355 and I believe it was 1979 and won NASCAR races most people thought he was still using a 426. And countless other wins at circle tracks
                     
                    Last edited: May 14, 2022
                  • rumblefish360

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

                    Messages:
                    43,344
                    Likes Received:
                    15452
                    Joined:
                    Jun 21, 2005
                    Location:
                    Grant Valkaria, Florida
                    Local Time:
                    7:19 AM
                    *I Think* the W2 was introduced in ‘75/‘76.
                     
                  • K.O. SWINGER

                    K.O. SWINGER Meeting in the alley since 1976

                    Messages:
                    2,719
                    Likes Received:
                    2609
                    Joined:
                    Nov 18, 2010
                    Location:
                    oregon
                    Local Time:
                    6:19 AM
                    Yes you're right! And going back and checking it look like Petty switched over to a small block in 1978
                     
                  • gzig5

                    gzig5 Well-Known Member

                    Messages:
                    2,172
                    Likes Received:
                    2604
                    Joined:
                    May 3, 2018
                    Location:
                    Mequon, WI
                    Local Time:
                    6:19 AM
                    Unless you have a time machine you’re not getting new W2 heads from a commercial vendor.
                     
                  • Brooks James

                    Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

                    Messages:
                    2,634
                    Likes Received:
                    1429
                    Joined:
                    Dec 12, 2020
                    Location:
                    Fruitland Park Fl
                    Local Time:
                    7:19 AM
                    Theyre cast iron repops
                     
                  • mbaird

                    mbaird mbaird

                    Messages:
                    8,578
                    Likes Received:
                    5444
                    Joined:
                    Dec 10, 2005
                    Location:
                    boise, Id
                    Local Time:
                    5:19 AM
                    No ... they were left over Race 48 degree heads. Looks like they are now out of stock .
                     
                  • Brooks James

                    Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

                    Messages:
                    2,634
                    Likes Received:
                    1429
                    Joined:
                    Dec 12, 2020
                    Location:
                    Fruitland Park Fl
                    Local Time:
                    7:19 AM
                    48 degrees, educate me pls
                     
                  • rumblefish360

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

                    Messages:
                    43,344
                    Likes Received:
                    15452
                    Joined:
                    Jun 21, 2005
                    Location:
                    Grant Valkaria, Florida
                    Local Time:
                    7:19 AM
                    No one repop a W2 heads. Don’t know how the hell you thought that one up!
                    Lifter angle change from 59*’s in order to straighten out the pushrods for geometry correction on the whole system. You also get more out of the camshaft lobe directly translated. The problem is expense! It’s huge!
                     
                  • Brooks James

                    Brooks James VET, CPT, Huey Medevac Pilot FABO Gold Member

                    Messages:
                    2,634
                    Likes Received:
                    1429
                    Joined:
                    Dec 12, 2020
                    Location:
                    Fruitland Park Fl
                    Local Time:
                    7:19 AM
                    I just looked them up again
                    Jegs, w2 cast iron heads, $656 each. ill call them
                    Update
                    Currently out of stock for 59 degree blocks
                    With standard cam
                    65 CC chamber
                    Mopar performance 5249769
                    $656
                    Im sure Ill be shocked at the price of the heads valvetrain when i look it up

                    Update, crazy money for Valve, , springs, rockers, pushrod. PLUS a pro to build them. Looks like Ill porting my stock magnums, paying with sweat
                     
                    Last edited: May 14, 2022
                  • Scody21

                    Scody21 Just send it

                    Messages:
                    1,561
                    Likes Received:
                    1794
                    Joined:
                    Jul 17, 2019
                    Location:
                    Southwest Washington Coast
                    Local Time:
                    4:19 AM
                    Summit shows them, with delivery date of a month out. Most likely Out of Stock..
                     
                  • dodgedifferent2

                    dodgedifferent2 Well-Known Member

                    Messages:
                    2,830
                    Likes Received:
                    705
                    Joined:
                    Aug 8, 2008
                    Location:
                    southwestern, Ontario
                    Local Time:
                    6:19 AM
                    If your looking for w2 heads in aluminum. Find an Indy cylinder head dealer.
                    Indy 360-1as rectangle port (w5)
                    and
                    Indy 360-2 as oval port (w2)
                     
                  • pittsburghracer

                    pittsburghracer FABO Gold Member FABO Gold Member

                    Messages:
                    7,862
                    Likes Received:
                    15996
                    Joined:
                    Apr 20, 2016
                    Location:
                    Freeport, PA.
                    Local Time:
                    7:19 AM
                    Stock W2 heads are still available from private owners and I see them often. There is even a Facebook group for W2’s. Heck I have a buddy that has two brand new W5 heads that he will never do anything with. And the stock econo W2 heads I flow tested went 260@.450 then fell on their face. With the stock valves I easily had them up over 300 cfm and ran 9.80’s in my duster with a .520 Racer Brown solid lifter cam on pump gas BP93. They cracked after three years of use.
                     
                    • Like Like x 2
                    • pittsburghracer

                      pittsburghracer FABO Gold Member FABO Gold Member

                      Messages:
                      7,862
                      Likes Received:
                      15996
                      Joined:
                      Apr 20, 2016
                      Location:
                      Freeport, PA.
                      Local Time:
                      7:19 AM
                      CE22F0D0-C244-4833-8927-FAD7CF26B491.png
                       
                    • pittsburghracer

                      pittsburghracer FABO Gold Member FABO Gold Member

                      Messages:
                      7,862
                      Likes Received:
                      15996
                      Joined:
                      Apr 20, 2016
                      Location:
                      Freeport, PA.
                      Local Time:
                      7:19 AM
                    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.