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    1. 01-03-2016 #1
      67 455 Bird ragtop's Avatar
      67 455 Bird ragtop
      67 455 Bird ragtop is offline Registered User
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      GM single piston caliper ???

      I'm in the process of cleaning up my GM single piston calipers. My question is about the banjo bolts and bleeder screws. Are the threads on these a normal thread pattern??? They need a little cleaning up due to sitting around for a while. I think the bleeders are 3/8-24. Not sure about the banjo bolts or the caliper pins.

      67 Firebird Convert 455 +.060 Johnny Winters TH400 74cc KRE d-port flowed @ 310 cfm heads piston dished 16cc H-beam rods Comp Cam 305-AH-8 cam 108* LSA 253/260 @.050 duration .577/.594 lift w/1.65 rockers Ford 9" 3.55 Detroit Locker M/T Sportsman Radials 31x18x15 on Convo Pro 15x15s

      Honest dad that 455 on the side of the block is a serial number
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    3. 01-03-2016 #2
      Protour_Pinto
      Protour_Pinto is offline Registered User
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      If they are from a G Body they are Metric
      The rule is measure twice and cut once. My problem is I still measure with a mic and cut with an axe!
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    4. 01-03-2016 #3
      67 455 Bird ragtop's Avatar
      67 455 Bird ragtop
      67 455 Bird ragtop is offline Registered User
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      Quote Originally Posted by Protour_Pinto View Post
      If they are from a G Body they are Metric
      These are WAY before metric I'll take the bolts with me and check them with a nut someplace just to be safe. I think the banjo bolts are 5/16 fine thread.
      67 Firebird Convert 455 +.060 Johnny Winters TH400 74cc KRE d-port flowed @ 310 cfm heads piston dished 16cc H-beam rods Comp Cam 305-AH-8 cam 108* LSA 253/260 @.050 duration .577/.594 lift w/1.65 rockers Ford 9" 3.55 Detroit Locker M/T Sportsman Radials 31x18x15 on Convo Pro 15x15s

      Honest dad that 455 on the side of the block is a serial number
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    5. 01-03-2016 #4
      67 455 Bird ragtop's Avatar
      67 455 Bird ragtop
      67 455 Bird ragtop is offline Registered User
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      Finally got it sorted out.

      Bleeders 3/8-24
      Banjo Bolts 7/16-20
      Caliper pins 7/16-20

      Now I can chase and clean up the threads
      67 Firebird Convert 455 +.060 Johnny Winters TH400 74cc KRE d-port flowed @ 310 cfm heads piston dished 16cc H-beam rods Comp Cam 305-AH-8 cam 108* LSA 253/260 @.050 duration .577/.594 lift w/1.65 rockers Ford 9" 3.55 Detroit Locker M/T Sportsman Radials 31x18x15 on Convo Pro 15x15s

      Honest dad that 455 on the side of the block is a serial number
      Reply With Quote Reply With Quote


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