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which are the stage 3 cams? are these the 284's or whatever or the 292's or 300's all of these have a very high lift and cause the 2jz to become an interference engine. most people also do not need anywhere near this much lift or duration. hks/jun 272's work fine up to 900-1000rwhp. and they only have approx 9.3mm of lift
 

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Just set the cam gears to 0 on both. Most people only see maby 2-4 hp change. the cams are already optimized.
 
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