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Discussion Starter #1
so i replaced the head on my ltz 400,when i came to assemble it back together, the camshaft wont sit at the jurnales(bigger), cold it be that the head was drz's head?
if so how can i know which z if i want to sell the shaft and caps...
 

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Discussion Starter #2
also, the spurk plug on that head was ngk DCPR8e..
 

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There is no difference that would make the cams not fit. If the shims are too thick, they can make the cam not turn freely, because of drag at the bucket.

Also, that is not the correct spark plug. CR7E is stock. I prefer CR8E if the compression ratio is raised at all.
 

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Discussion Starter #4
the threds on the sprk are bigger then CR7E,
ALSO THE SHAFT WONT SIT IN THE NEW ltz jurnals...
 

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Mine used to get stuck like that and took a few attempts to get them in, but that’s definitely a Z head.
 

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Discussion Starter #8
and the jurnals at z are bigger?
how can i know?
does the spurk type narrow it down?
 

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If the cams do fit, its possible someones boogered the plug threads and made it bigger..
 
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