Tight lash cam???

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  • Chaps46
    Member
    • Mar 2009
    • 89
    #1

    Tight lash cam???

    I've never ran one before. Put a Speedway special in a 6 inch rod 355, 11.5:1, WP S/R heads and this motor won't idle under 1100 rpms. Normal? Cam too big? Will opening up the lash help? Cam specs 252/260 @ .050, .539/.560 lift, lash is .016
    Thanks
    Tags: None
    • sj valley dave
      Senior Member
      • May 2007
      • 1016
      #2
      When we were running flat tappet cams, we ran a Crower tight lash with roughly 254/262 @ .050 and .607/.586 lift and it idled somewhere in the 1000 rpm range with a Willy's 4412 carb. It would go to 900 but sonded terrible like it was ready to die...

        Comment

        • Dirtrunner35
          Senior Member
          • May 2010
          • 632
          #3
          What is wrong with 1100 rpm ??

            Comment

            • giffordracing
              Senior Member
              • Nov 2009
              • 227
              #4
              Idle mine at 1300-1400
              http://www.facebook.com/#!/pages/Gif...16628791741686

                Comment

                • Chaps
                  Junior Member
                  • May 2007
                  • 29
                  #5
                  That's all I need to know. Thanks all.

                  Originally posted by giffordracing View Post
                  Idle mine at 1300-1400

                    Comment

                    • fast_crew
                      Senior Member
                      • May 2007
                      • 844
                      #6
                      Agree idle should be atleast 11-1200 rpm to keep the cam lubed well at idle.
                      Josh K.

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