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ntjetboater
Joined: 15 Jun 2005 Posts: 401 Location: Land of many rivers
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Posted: Fri Sep 15, 2006 8:49 am Post subject: Cam questions |
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What is the lift split on the zz4 cam?
Also what is the lobe separtion angle?
I assume the duration is around 203/212.
_________________ If you ain't hittin bottom you ain't jetboatin! |
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Kev-o
Joined: 17 Jun 2005 Posts: 625 Location: Sylvan Lake
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Posted: Fri Sep 15, 2006 9:49 am Post subject: |
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lift (in.) .474intake/.510exhaust
duration (@.050) 208 intake/221 exhaust _________________ Kevin Kipling |
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SouthIdahoGary
Joined: 15 Jun 2005 Posts: 295 Location: Wilder, ID, USA
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Posted: Fri Sep 15, 2006 10:37 am Post subject: |
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The ZZ4 cam (P/N 10185071) is ground with 112º of lobe separaration. Chevy actually installs the cam with the phasing slightly retarded.
The following link is an actual "mapping" done by an outside source of the cam......
http://www.sallee-chevrolet.com/Cam_Specs/documents/ZZ4camshaftspec.doc _________________ "faster, Faster, FASTER until the thrill of speed overcomes the fear of DEATH"#163 "Tuff-n'-Nuff" |
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Cavefish
Joined: 18 Jun 2005 Posts: 130 Location: Klamath, CA, USA
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Posted: Sat Sep 16, 2006 8:12 am Post subject: |
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Interesting reading Gary! I took the valve event numbers from the .050 lift line and plugged them into desktop dyno instead of using the generic ZZ4 cam file it came with. I assume you have better software and that you can plug ALL the numbers in- _________________ -Jesse |
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