which d series engine is number one for speed-horepower, and everything Z6 or Y7?

 

Try searching google...

The Z6 has vtec and little more HP than the Y7.

 

that should be the y8.

 

just get the z6 and slop the y8 intake manifold on it!

 

or if you want to get crazier, try the y8 bottom end with the z6 head and the y8 mani. lol

 

it'll probably blow up anyway, so just buy an a6 for 200$ throw 150$ z6 head on it.

 

Z6 stronger, Y8 faster, A6 cheaper and very close to the others..

All D-series motors make appox. the same power levels, but that's coming from a turbo guy, I'd rather have strenth vs N/A power b/c the turbo will make as much power as the motor can handle.

 

a6 block is strongest, so I'm told.