are all 02-04 zo6 pushrods 7.45?
#4
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All things being equal, to keep the same lifter preload, you would need a slightly longer pushrod. You will find that if you do a search on the zo6 cam, lots of people have installed them in their LS1 with oem length pushrods. You will also find the difference in the valve stem heights. I can't remember what it is right off hand.
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Stock pushrod length in LS1 and LS6's are 7.400. The hollow-stem ZO6 valves are .6mm longer which is about .0236; divide that by the 1.7 ratio of the rockers and you get approx .014 that you need to add to a pushrod length to run ZO6 cam in an LS1. Since they are only available in + or - .025 increments, 7.425 would be a good length.
Or, you could use a length checker to verify...
Or, you could use a length checker to verify...
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Originally Posted by Smitty's '04 GTO
Stock pushrod length in LS1 and LS6's are 7.400. The hollow-stem ZO6 valves are .6mm longer which is about .0236; divide that by the 1.7 ratio of the rockers and you get approx .014 that you need to add to a pushrod length to run ZO6 cam in an LS1. Since they are only available in + or - .025 increments, 7.425 would be a good length.
Or, you could use a length checker to verify...
Or, you could use a length checker to verify...