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Thread: Installing 1.6 roller rockers on a ZZ4
          
   
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  1. 01-01-2004 07:49 PM #1
    carlheizer is offline Registered User
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    Car Year, Make, Model: 69 Camaro SS
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    Installing 1.6 roller rockers on a ZZ4

     



    I am told that 1.6 roller rockers will increase lift and HP and give this engine a lopier idle. Has anyone done this and have any advise, part numbers, etc? Thanks.
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  3. 01-02-2004 06:57 AM #2
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    stepside454 is offline CHR Member
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    Car Year, Make, Model: 75 GMC C-15
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    it does increase lift & CAN in crease HP... its trial & error, some people use 1.6 on intake & exhause, some do it just on exhaust...or intake...depends what works.
    As I recall your ZZ4 uses self aligning rockers, so keep that in mind if buying rockers.John
    75 GMC C-15 factory 454, automatic, lowered
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