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artzzr

3l engine roller arms

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Hi terry

Have built this engine with balanced crankshaft assembly. K1 rods . Cp pistons. Svt cams etc. Have added unichip rev extend module and last dyno run produced 261 hp crank figure at 7400 revs . In this engine I think the roller rockers would be the first thing to break and wonder if you had a figure in mind . I was told they break around 8.000 revs

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I had read in the past that the valves begin to float around 7500 rpm. ST220 valve springs are supposed to have a higher spring rate and should prevent valve float above 7500.

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