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I installed a set of Mopar Performance adjuster screws (with the required mod fro the lock nut ) on my 273 rockers and mocked up on the heads . You can see the rocker tip sliding off the valve stem at full lift (501") NOT OK I installed a set of CCA-621-16 .080" lash caps fronm Summit...

I just received a new set of edelbrock performer rpm cylinder heads 60779. From Summit. I should note that there was a lot of metal machining curls in the box and in all of the passages of the heads. I first put a strait edge on top of the valve stems. they are NOT all the same! 4 are and the...