Oil pressure/ new oil pump prime

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Information on what your set up is would be helpful. There are a lot of possibilities of what led up to the failure. Could be as simple as the quality of parts, not saying cheap parts were used but maybe not up to the task of dealing with the valve spring pressures required for the cam set up you are running.
 

As mentioned above, there are several reason why this can happen. Out right part failure of the push rod, poor quality, Spring pressure to much for the rod to handle,valve stuck. Or just a freak occurrence.
 
I used the best of everything tho Indy cylinder head street killer kit is what I ordered including Indy ez1 heAds, comp cam and whatever piston brand they use for this
 
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Without seeing the valve job on the heads (rocker geometry) or measuring the spring pressures it's hard to say why the pushrod broke. You have some work to do - regardless.
 
I used the best of everything tho Indy cylinder head street killer kit is what I ordered including Indy ez1 heAds, comp cam and whatever piston brand they use for this

May have a valve hit a piston? Or as Moper stated it could be in the rocker geometry.
 
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???????????????
 
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