formula for valve lift

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04-22-2005, 02:30 PM

Stryker

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formula for valve lift

i need to find a formula for figuring out valve lift with 1.6 rockers. any input will be great. thanks.

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04-22-2005, 02:52 PM

Taspeed

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I am guessing that this is an ls1? You need to take the current lift of your cam and divide that lift # by 1.71. Then multiply that product, which should be the actual lift height of the cam, by 1.60. That will give you the new lift.

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04-22-2005, 02:54 PM

Stryker

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its for an lt1 car.. is that the same?

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04-22-2005, 02:58 PM

SMOKINV8

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By that formula, you'd just divide your cam lift by 1.5, then multiply that product by 1.6.

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04-22-2005, 02:59 PM

Steve Bryant

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Valve Lift = Cam Lobe Lift X Rocker Ratio
Therefore, if the lobe lift is .300 and the rocker ratio is 1.6, the Valve lift is theoritically .300" X 1.6 = .480"