Thread: How about this cam in a 283?

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You guys have to understand.....THE INTAKE CLOSING POINT ON THE CAM MUST BE MATCHED WITH THE STATIC COMPRESSION RATIO. You could have a cam in a 283 that was less than 200 degrees @ 0.050" tappet lift and it would run great if the ICP and SCR were matched. On the other hand, you could have a cam in a 283 that was 270 degrees @0.050" tappet lift and it would also run great if the ICP and SCR were matched. Your motor, with a SCR of 9.1:1 will only match up with a cam something like this, with a duration of 204/216 and a closing point of 29 degrees after bottom dead center. This cam in your motor will make a DCR of 8.223:1 and would run REAL, REAL good on pump gas with your 0.045" squish. It's ground on 112 degree LDA for good manifold vacuum and will rev to 5,600 with the proper matching springs.
http://www.cranecams.com/?show=brows...tType=camshaft

P.S. In order to achieve the same DCR of 8.2 using the cam you have on hand, you would need a static compression ratio of 9.8:1