tkoral 6 Posted August 14, 2016 Report Share Posted August 14, 2016 I've been searching but can't find a straight foreword answer. Aftermarket valve guides need to have the lip machined off if going to be used with anything other than stock cams for a 12v head if the guides aren't machined shorter the valve seals will get smashed . From my understanding only aftermarket guides need to be machined if used with higher duration cams such as 262s 268s... My question is can I use a head with stock guides still intact with a higher lift cam? Link to post Share on other sites
J4Y VR 36 Posted August 14, 2016 Report Share Posted August 14, 2016 I used 282's with standard head https://youtu.be/dP01L2cn4E0 tkoral 1 Link to post Share on other sites
tkoral 6 Posted August 15, 2016 Author Report Share Posted August 15, 2016 That sounds crisp Link to post Share on other sites
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