Cam recommendations
03-12-2006, 03:00 PM
#1
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Cam recommendations With a 402 stroker in a street car that sees occaisinal track use, what is the recommended cam that will work in a motor that has 11.9:1 to 12:1 static compression. This part is fixed at this point and can't be changed. What cam set-ups will work well with pump gas year round from a dynamic compression standpoint? I am looking for experienced users and their own observations. Heads are stage 3 MTI's. Gaskets are .045 cometics.
03-12-2006, 08:42 PM
#3
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Can someone calculate the dynamic compression for the above motor with a 244/250 114 lsa cam with no advance ground in. Assume an XER with a 293 advertised duration for the intake lobe.
03-13-2006, 05:19 AM
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03-13-2006, 07:52 AM
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That's a great tool for static compression, but what Spin is asking for is dynamic compression. That's actual compression the motor will see in relation to a particular grind camshaft. The overlap of a cam, or time both valves are open, will bleed off compression giving a lower value than calculated static compression. So, a motor with 12:1 may actually only see 11.3:1 with a big cam. Or something like that. I hope the experts chime in and correct my lame attemptat an explanation.
03-13-2006, 10:55 AM
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Look at little farther and you will see Dynamic - pick the wrong link.
http://www.rbracing-rsr.com/comprAdvHD.htm
http://www.rbracing-rsr.com/comprAdvHD.htm