Quote:
Originally Posted by kevin1985912
I think it's because VQ37VHR has higher compression than the VQ35
|
I didn't know the HR engine in the 07-08 Zs had strong enough internals to handle 14 psi even with the lower comp ratio. I had read the older DE engines in the 03-06 Zs w/ stock internals had trouble handling over 10 psi and they had even lower compression than the HR.