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what will the lift be with 1.8 rockers

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Old 10-24-2011, 08:04 PM
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Default what will the lift be with 1.8 rockers
Getting a new cam and thinking of getting yella Terra rockers with 1.8 rocker what will the lift be the cams specs r 219/227 .607/.614 on a lsa of 112 will it change the way the cam will act
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Old 10-24-2011, 08:10 PM
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219/227 .643/.650

Rocker Arm Lift Change with Ratio Variations
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Old 10-24-2011, 08:33 PM
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I take it that's a big jump
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Old 10-24-2011, 08:34 PM
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^^ nice calculator...
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Old 10-24-2011, 08:37 PM
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To OP What Kind of heads do you have to justify that much lift?
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Old 10-24-2011, 08:49 PM
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L92 but I think that's gonna be to much lift for me I'm worried ptv issues with that kind of lift and heads being milled 40 ths
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Old 10-25-2011, 03:51 PM
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It's an easy calculation so anybody can do it themselves, even without the internet and that fancy calculator

(Old Valve Lift/Old Rocker Ratio) x (New Rocker Ratio) = New Valve Lift
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Old 10-29-2011, 12:13 AM
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I would be checking the PTV with just the 1.7's.
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Old 10-31-2011, 10:26 AM
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Originally Posted by midevil1
I would be checking the PTV with just the 1.7's.
With a stock long-block, there will be more than ample clearance for pistons to valves.
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Old 10-31-2011, 12:52 PM
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How about if the heads r milled .40ths
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