what should i do about hooking up the o2 sensors on my 86 z28 that ive got an lt1 in? Just put them into the y pipe?

 

What year is the LT1?

 

Most LT1's require two O2 sensors. Most thirdgen headers only have a location for one o2. For the side that doesn't have a place for an O2, you have drill out a hole and weld in an O2 bung. You have to have the exhaust off to do this and the best location is the header/manifold.

Summit racing sells some. I went with the Holley one but the Summit Stainless steel might be a better choice.
http://store.summitracing.com/egnsea...nresults=false

 

thanx firebat , for five7kid its a 94 out of a caprice