bowtie block cam bearings

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  • mherbert
    Senior Member
    • May 2007
    • 164

    #1

    bowtie block cam bearings

    Do all bowtie blocks require 2 inch cam bearings? If only some of then how do you know which ones take regular cam bearings and which one takes all 5 2 inch bearings. Do they take special oil restrictors? I have one with an oil pressure problem and cannot find the problem. Are they prone to crack somewhere that would affect the oil pressure.
  • dave41
    Senior Member
    • Sep 2007
    • 208

    #2
    Originally posted by mherbert View Post
    Do all bowtie blocks require 2 inch cam bearings? If only some of then how do you know which ones take regular cam bearings and which one takes all 5 2 inch bearings. Do they take special oil restrictors? I have one with an oil pressure problem and cannot find the problem. Are they prone to crack somewhere that would affect the oil pressure.
    last I had very fine crack in no.3 main saddle.

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    • let-r-eat
      Senior Member
      • May 2007
      • 2319

      #3
      What the oil pressure doing? Wet sump?
      BUCKLE UP NOW, YA HEAR?

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      • mherbert
        Senior Member
        • May 2007
        • 164

        #4
        it had 40 lbs at idle and 70 lbs at racing. Ran a heat race and when i let off to exit the track, the oil pressure light came on and the guage read 20 lbs. I let it idle for a fews seconds to see if it would come back up. Instead it went to zero. I shut it off immediately and loaded the car. Back at the shop I dropped the pan and checked all the bearing and they were all ok. Cut open the oil filter and found very little metal. Replaced the oil pump with a new shuman oil pump. Now when i crank it it has 10 lbs at idle and will only go up to 40lbs.

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        • rb357
          Junior Member
          • Nov 2011
          • 6

          #5
          two ideas 1 have had Fram oil filters do this what are you using, also there is a plug in block under rear main cap did you replace it when you assembled engine

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          • Lizardracing
            Senior Member
            • Sep 2009
            • 839

            #6
            id also verify the gauge is accurate.

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            • powerslide
              Senior Member
              • May 2007
              • 2696

              #7
              Originally posted by mherbert View Post
              it had 40 lbs at idle and 70 lbs at racing. Ran a heat race and when i let off to exit the track, the oil pressure light came on and the guage read 20 lbs. I let it idle for a fews seconds to see if it would come back up. Instead it went to zero. I shut it off immediately and loaded the car. Back at the shop I dropped the pan and checked all the bearing and they were all ok. Cut open the oil filter and found very little metal. Replaced the oil pump with a new shuman oil pump. Now when i crank it it has 10 lbs at idle and will only go up to 40lbs.
              So you haven't started it since you put the new pump on?

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