+ Reply to Thread
Page 2 of 2 FirstFirst 1 2
Results 11 to 15 of 15

Thread: measuring cam base circle

  1. #11
    Join Date
    May 2008
    Location
    Crowder, OK
    Posts
    8,005
    Quote Originally Posted by RedHeartbeat View Post
    The base circles vary due to lift and duration. They can only cut a lobe so tall before it will not be able to fit through the bearing bores so they get the height of the lift by reducing the base circle.
    But you would assume that givin a grind, they could tell you what size base circle it used. I can see it being different on different grinds, but not on the same grind.

    1969 Chevy RCLB C10 350/TH400 SOLD
    2007 Chevy RCSB 4.8 4x4 LS SOLD
    2008 Chevy RCSB 5.3 4x4 LT SOLD
    2010 Chevy CCSB 6.2 4x4 LT SOLD
    2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
    2013 FORD CCSB F350 6.7 Powerstroke 4x4


  2. #12
    Join Date
    Jul 2008
    Location
    The Garage
    Posts
    1,330
    Quote Originally Posted by Frenchy View Post
    If it's the cam you bought from me, it jives with stock length pushrods.
    Ok, Thanks Devin. I guess I should have just asked you in the first place Still, I'm trying to get everything right so I'm being a little careful

    ~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~

  3. #13
    Join Date
    Jul 2008
    Location
    The Garage
    Posts
    1,330
    Oh, one other thing. My friend just put the texas speed torquer V3 cam in his GTO. it's a 64X lift cam and based on what I'm reading, I'm thinking he might need longer pushrods. Suggestions?

    ~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~

  4. #14
    Join Date
    Aug 2007
    Posts
    754
    Same thing. Measure the base circle and compare it to the stock cam.

  5. #15
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Do the contact pattern check on the valve tip and center it with an adjustable pushrod. measure it and order new pushrods or lock down the jam nut and send it to comp and have them make you a set to match.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts