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Hello all 440 fuel pump pushrod question?

I have several used ones.....one is .220
 
I posted this picture in another thread. The one on the right is 6 months old. I also installed the one before I installed the one on the right. That is 2 bad pump rods in a 6 month period of time. The first one I took out was ate up by a full 3/16 of an inch. The one you see below is about an 8th inch worn down. But one is a Comp Cams Push rod the new one on the left is I think 440 Source. I installed it but the hardness is yet to be determined.

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The 156,000 mile OE out of my Bee vs another OE out of a block I've had stored for 40 years. ZERO length wear..
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