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-   -   911S cams & CIS compatibility (http://forums.pelicanparts.com/911-engine-rebuilding-forum/342290-911s-cams-cis-compatibility.html)

B5QShip 04-20-2007 09:31 AM
911S cams & CIS compatibility
 
For the 150bhp 1974 2.7 motor, are the S cams compatible with the stock CR and CIS system?

Henry Schmidt 04-20-2007 10:02 AM
If you are referring to early "S" cams I.E. 69-73 MFI cams, they will not work with CIS injection. [too much over lap, the engine will not idle]
If your reference is to 74-77 CIS "S" cams they will work just fine.


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