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Help calculating DCR

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Old 08-22-2019, 04:32 PM
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Default Help calculating DCR
Does this seem right? The calculator shows that my DCR is 9.74:1 Seems like most LS1s are in the mid 8s. Not sure if this is right or im doing something wrong here.



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Old 08-22-2019, 04:54 PM
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Use the intake close spec for your cam @ 0.006 Not the # @ 0.050 like you are doing, that's why it is giving you such a high number
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Old 08-22-2019, 10:08 PM
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Heres my cam card, i have no idea where to find the ivc @ .006
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Old 08-23-2019, 07:15 AM
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Doesn’t seem to be listed. Who made the cam?
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Old 08-23-2019, 07:25 AM
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That's cam motion. Add 27 degrees to your 050 IVC. Use 45 to make it easy. Use 72 for your 006. Will be close enough.
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Old 08-23-2019, 10:03 AM
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Originally Posted by Darth_V8r
That's cam motion. Add 27 degrees to your 050 IVC. Use 45 to make it easy. Use 72 for your 006. Will be close enough.
Thanks Darth, came out to 8.09:1
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