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This xpz cam came with 2 different sized pushrods and no directions on which go where 6 are 7.050 6 are 7.000 has anyone done one of these where do they go?
 

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Whoa zombie post. Best bet is usually to just start your own thread to keep focus on the active folks, rather than a 10.5yr old one.

As it says on ZZP's pushrod page (they hint at this on the cam page, but it's just one click further):
"The XPZ cam will generally require two different length pushrods because the cams base circle is smaller on the intake lobe than on the exhaust. The most common pushrod combo for an XPZ build is (6) 7.05" and (6) 7.00"."

The smaller base circle on the intake lobes requires the slightly longer pushrods to remain stable without slop while the valves are closed.

I believe they do this to avoid the lobe getting close to the large journal diameters, so it doesn't risk hitting those bearings during install. Not sure if the other large cams also did this (Thrasher, Intense S3/4, etc.) and I haven't put calipers on a cam recently to measure this for a quick reference. If you happen to have a set, that'd be good info that's probably posted every once in a while.
 
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