BK and I were all over it. The heads were... different, but not sure why, it was just strange. There was nothing on the car to prove L89, I don't think it has the original block, but it was a code 10 car. In my opinion, it looked like a pair of dated heads were installed
Might sound strange, but my buddy Neal in NY put a set of NOS, dated '68, L89 heads on his '68 Nova for the pure stock race in Michigan. So, if he ever sold that car, the next owner might think that they were original.
I think part of the problem is that we assume that the engine code of an L89 Nova will be the same as an L89 Camaro - would make sense since they share the same L78 codes. But, without seeing one in person, we don't know that for sure. So, there are some cars with the L78 engine code, but with dated L89 heads - does that mean that it's an L78 or an L89 that they didn't bother using the L89 suffix code for? Most of us would lean towards that situation being an L78 - unless there was paperwork to show an L89, of which we have seen none
