Pushrod for hydraulic cam and 273 rocker arms

Here's the latest update:

We did get a measuring push rod and measured each 5 times to get a good average length. We ended up needing 7.058" from cup to ball.

We ordered a set, and they came. We measured them to be average of 7.064" +/- .005" from cup to ball and installed them....

We installed them today and have about an average of 1 1/2 threads below the rocker arm with the Comp Cams replacement lock studs/nuts for the rockers:

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Who did those heads, K.K.? Nice work!