I’ve recently gotten in the market for a header for my 90 LS, and now that I’m looking around, I notice that there’s different part numbers for either the 90-91 and the 92-93 pieces. Other than the 2nd O2 sensor that the 92-93 (right?) are there any differences in dimensions that will cause the later year header to not fit on my 90? I’ve been searching but I can’t quite hit the nail on the head :gunright:
im not completely sure about this,
maybe someone can correct me if im wrong: 90-91 header meets the cat a little further down, so its a little longer than a 92-93 header (so 90-91 full catback exhaust is shorter than one made for a 92-93 [like maybe 3-4inches]). oh and i think oxygen sensor goes into a different spot.
but as always: :search:
im sure i read the info somewhere on here.
Great Question
I called the DC sports company directly to try and get a clear understanding of the differences. The tech guy at DC Sports/AEM said he wasn’t sure. :umno:
From all the pics I have seen, it looks like the lengths are the only differences but I can say that the oil pans are different between the 90/91 and 92/93.