im goin to be going all motor soon and i was wondering which would be better, a z6 or y8.

currently i have a d16y7 with a y8 head and a y8 tans

 

i currently have a z6 and most motors are tired at over 200000km...duno the mileage conversion
best bet to run y8 all motor, better in the long run IMO

 

more opinions?

 

The y8 has a slightly better head and intake manifold. Plus you are more likely to find a lower mileage y8 as they are newer. I would at least recommend the y8 tranny.

Do you have they y7 in your car or are you running the z6? That could help. If not I think it's minime time.

 

my specs are under neath as my signature
y7 bottom end, y8 head, and y8 trans

 

Both blocks perform the same, really. Is ODB1 or ODB2 an issue? I'm building a Y8 simply because I need to bass a bi-annual emissions test so I need to stay ODB2. Some think that the Y8 has more of a tendency to spin bearings because the oil pump runs at a lower volume than the Y8. However, the Y8 oil pump can be shimmed and ported or you can purchase a $200 high volume after market pump.