i have a high compression z6 longblock and am running a a6 intake manafold with a jg throttle body i also have a z6 intake manafold that i got with my motor but didnt use because of my throttlebody which wont work with my z6 intake manafold. i was also thinking about getting a y8 intake manafold which is the way im leaning twards now

can i get some advice as to which one i should use?
will i see acuall whp with the y8 im or just better throttle responce and some top end gains??

 

from what everyone says the Y8 is the best... i have never seen dyno proof of it though. i hope its true cause i just put one on my car. its not on the road yet so i dont know how it will run.

comparing it to the a6 manifold the plenum is definately bigger and the runners are somewhat larger too (i had to port the head quite a bit to get the correct size difference between the two). it should help up top but i dont know if you will loose lower end power because of any loss in velocity. ive been looking for a chassis dyno somewhat close to me but i cant find one...no jobs, no chassis dynos, new york state sucks!