y8 vs z6 crank pully

[FMYStreetRacer]

can anyone tell me if the timing marks on the y8 pully are different than on the z6 pulley? i put a y8 crank pulley ojn my z6 motor that i just put together and the timing is way off. i know that i'm not a tooth off. the carjust plain runs like shit to. i need to put another motor into it.

[FMYStreetRacer]

also if i decide to use the z6 head on the y8 bottom then what crank pulley would i use?

[FMYStreetRacer]

bump i need to know!

[FMYStreetRacer]

are the marks different????? come on people. i don't know why they would be.