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I trust you clearanced the stock heads guide boss/seal to retainer clearance at full lift.
and installed suitable high performance valve springs etc.
valve spring stack and retainer seal guide boss clearance has to be verifyed with this cam.
Or bent pushrods or worse will be the result. Stock rockers must be clearanced too (slot length)
this is not a "bolt in cam" and a poor choice for a near stock motor.
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