Thread: Big block valve train clatter

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Originally Posted by bigred1957

I see, so by what your saying, my distributor could be the next place to look? It is aftermarket but I haven't looked into it yet. I need to look for or add o-rings to complete the passage efficiently. Is there any difference between bb and sb dist's that could cause this problem?

well what i am saying is with MSD they have o rings nice to have .i roll the cast on the bore hole on the block so they do not cut O rings going in . i have never seen this so bad that you would get low oil psi or nothing but it would not hurt to check ...there allways a first time.... so check the dist for size next to another one stock GM one or one out of a running engine.if not i can get you a size if you need it . if it a cheaper china one could be off .i used the MSD and MALLORYS AND ACCELS AND others never had a lost of oil psi from this.but you need to start some place .look what Jerry has posted and what i did as well as others .make a list and check every thing we posted on this.here s is a photo of how close the rockers can get to the upper boss of the valve coves can rub if you look on number 8 and 1 intake rocker by the upper valve cover bolt