- May 11, 2021
April 20th, 1970 and July 1st, 1969….the 1969 head might have been in addition to the block exchange.
I really appreciate your time and opinion on this. I don’t know why someone would intentionally swap out exhaust manifolds. I would venture to say that it occurred when the CE block was installed. At any rate, they are awesome cars, and I’m enjoying putting it back together. Thanks again!I'm going to say straight up here. 1970 L34 camaros did not receive smog pumps. I've seen a lot of 70 L34 camaros. Also know these cars very well. Your build sheet does not have air in block 41 to say your was built with smog. Not trying to upset you but, I think you should start searching for correct NON smog exhaust manifolds and call it a day. Just my 2 cents. Those 1970 smog manifolds probably would sell here easily to buy the correct no smog manifolds for you car.
Is it possible that this was for the 49 but that California may have required the pump? They had their own set of requirements in 1970, hence the NA9 evap systems. I don't know, just throwing it out there.It is my understanding the L-34 did not receive the smog pump because it met all pollution standards without it, unlike the L-78 models.