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    Results 1 to 9 of 9
    1. #1
      Join Date
      Mar 2006
      Location
      St Augustine FL
      Posts
      51

      Small base circle cam??

      Hey all,
      I'm just looking for some expertise/opinion on the following.
      sbc 383 3.75" crank, 6" rods. 4.030" slugs
      I have been told that there are possible clearance issues to be dealt with. The rods have been clearanced for the approx size cam I want to use, but do you think it would be better to use a small base circle cam to increase the margin of error.
      If so....what will I need to consider when going this route??
      Do they make taller lifters or do I just use longer pushrods.
      Are there issues with cam flex with this style cam or am I just worrying too much? All info appreciated
      Thanks,
      Mike

      Mike M
      67 Camaro, big plans, empty wallet!!


    2. #2
      Join Date
      Feb 2005
      Location
      mo
      Posts
      1,343
      you just have to tell the cam company you need a small base cam,they set u up.

    3. #3
      Join Date
      Mar 2006
      Location
      St Augustine FL
      Posts
      51
      Sure,
      I can do that, I guess I was just trying to find out if there's a down side.
      Mike
      Mike M
      67 Camaro, big plans, empty wallet!!

    4. #4
      Join Date
      Sep 2002
      Location
      San Jose, CA
      Posts
      1,793
      Its costs an extra $25 - $30 other than that no, not on a street car
      1971 Camaro, 383 stroker ~500HP,M21 Trans with lightened flywheel. All Sorts of Auto-x Goodness in the Suspension. 12" Brakes ->SOLD

      But ask me about my 2004 STi Auto-x car...

      Just call me Brett

    5. #5
      Join Date
      Sep 2001
      Location
      Accord, NY
      Posts
      2,295
      Country Flag: United States
      I've been looking into this. You'll need longer pushrods but I haven't heard of any downside. It seems a good safety net to me.
      69 Camaro convertible, 410, M22, 8-pt cage therapy program. SOLD.
      68 camaro - SOLD
      67 Bel Air - New street project with perfect floors, frame and trunk!

    6. #6
      Join Date
      Aug 2004
      Location
      north central Iowa
      Posts
      503
      Country Flag: United States
      I have no personal exp. with this, but I do know a lot of oval track racers have done a lot of this when messing with big inch strokers and I have never heard of a downside/problem with using the small base circle cams.
      72 Nova SS, on the back burner for now.


      current cruiser: "The green machine"

      '70 Impala 4drht, 26K original miles, 2" drop springs and large swaybars, drives pretty good for a land yahct in the middle of an ls1 swap, but thinking about changing directions to a duramax diesel swap.

    7. #7
      Join Date
      Feb 2005
      Location
      mo
      Posts
      1,343
      all the cirlce track stuff i do use small base cam's,we build alot of 393 and 406 dirt mod stuff.i have one in my 396 lt1,no problems

    8. #8
      Join Date
      Sep 2002
      Location
      San Jose, CA
      Posts
      1,793
      Any time I am dealing with a 3.75" stroke or longer (on a small block) I use a small base circle. Its just not worth the headache not to
      1971 Camaro, 383 stroker ~500HP,M21 Trans with lightened flywheel. All Sorts of Auto-x Goodness in the Suspension. 12" Brakes ->SOLD

      But ask me about my 2004 STi Auto-x car...

      Just call me Brett

    9. #9
      Join Date
      Mar 2006
      Location
      St Augustine FL
      Posts
      51
      Thanks Guys,
      I appreciate the input.
      Mike
      Mike M
      67 Camaro, big plans, empty wallet!!




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