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    1. 02-20-2015 #1
      DSL
      DSL is offline Registered User
      Join Date
      Oct 2014
      Posts
      68
      Country Flag: United States

      Bore Size Recommendation

      Hi Forum Members,

      I installed the Wilwood 14" Aero Kit on my 68 Camaro.



      I am looking to swap out the Master cylinder to Wilwood.

      I have a 7" dual diaphragm booster and was looking for input on Bore size match the Booster.

      I am currently running an aggressive cam on a small block and pushing out 14psi of vacuum pressure.
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    3. 02-22-2015 #2
      Apogee
      Apogee is offline Registered User
      Join Date
      Jan 2006
      Location
      Oregon
      Posts
      1,773
      Country Flag: United States
      Quote Originally Posted by DSL View Post
      ...I have a 7" dual diaphragm booster and was looking for input on Bore size match the Booster.

      I am currently running an aggressive cam on a small block and pushing out 14psi of vacuum pressure.
      I'm going to assume you meant 14" Hg vacuum, not 14 psi which equates to about 28.5" Hg. That said, I would probably run a 15/16" to 1" bore master cylinder, somewhat depending on the pad compound and your personal preferences. There's about a 12% difference between the two with respect to pressure versus pedal effort.

      Tobin
      KORE3
      It's what I does.
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