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Old Dec 13, 2005 | 12:49 PM
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Default Need tech advice

If the cam is a .512 with 1.5 roller rockers.... what does it change too when you put on 1.72 roller rockers????? I can't find any calculators online.
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Old Dec 13, 2005 | 01:05 PM
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i'll bet $5 you have 1.6's
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Old Dec 13, 2005 | 01:10 PM
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i willing to bet you have 1.6's cuz its a ford. lift with a 1.7 rockers is .544 and if there 1.72's its .550
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Old Dec 13, 2005 | 01:11 PM
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I have 1.72's in it because that I put in when i built the motor. I just want to know what the lift is now...since the tech card says .512 on 1.6's
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Old Dec 13, 2005 | 01:14 PM
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I believe you just multiply the net lift on the cam card by the ratio you have. not the 512 but the 300 something # range on the cam card.
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Old Dec 13, 2005 | 01:16 PM
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heres the formula:

total lift divided by rocker ratio= lobe lift
lobe lift x rocker ratio= valve lift
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Old Dec 13, 2005 | 01:41 PM
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.320
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Old Dec 13, 2005 | 04:40 PM
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Thanks guys
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