Looking for a way to positively ID a z6 or Y8 exhaust manifold/downpipe, and tell them apart if necessary. This would be without any original parts to reference or compare to.

Anyone know measurements, stampings, O2 locations, etc. that would help?

It seems the O2 sensors are in diffrent locations for these manifolds, but can anyone tell me exactly where on the manifold they are?

PICS would be a HUGE help here

Thanks in advance

 

http://www.hadamotorsport.com/tech/review/dsemc/

Last 3 pictures.

Any help?

 

That is a VERY, VERY good start!

Thanks, man.

Couldn't quite see the O2 sensor locations. Anybody have more detail on that?

 

But to throw in a little more as well, the o2 sensor on my OEM y8 header is on the front left of the upper half of the exhaust manifold, and protrudes out at about a 45 degree angle towards the passenger side. It is about 1-2" above the flange for the upper half of the header and comes through a hole in the heatshield.