Hi; Here's some info you may find helpfull. In 1969 all Camaro's built with a big block , L34,L35, L-78 and L-72 had smog equiment, regardless of transmission choice. Also all small block equipped camaro's built with a standard trans had smog equipment this included 307's, 350 2bbl's, 350 255hp's , 350-300hp's and 302-290 hp's. This also held true to a 6cyl std trans car. In The Chevelles there is an interesting difference. The above is shared with two exceptions. There was, as we know ,no 302 offered . Lastly the 396 325 hp automatic was not subject to smog controls. This also held true of the 396's found in the 69 impala. This is a key factor to why you find many more right hand exhaust manifolds dated 69 (178) than left ones with no smog provisions. I hope this helps . I have several early take off 69 pumps and several sets of 69 bb smog manifolds. for sale. Thanks Jim [img]/ubbthreads/images/graemlins/
[/img]