840 heads
 

What was the approx. casting date of the last 840 heads and what heads would have been on a Late 70 CE block that would have been put in a COPO Chevelle.Could it have had 840 heads or something else. Were all CE engines long blocks or were the shortblocks stamped CE also.
Trying to determine options for engine replacement.Thanks.

Re: 840 heads
 

I am also wondering if it would be correct or possible for a 4th week July copo Chevelle to have the 291 heads? I currently have a E 5 9 840 and a F 3 9 291 on this car.Possibly correct or most likely not or absolutely wrong. If it was the end of a casting run for the 840's could they have mixed in 291s? According to the VIN's listed elsewhere ther are only 3 cars with a later VIN than this car. Is there any evidence that the late 69 COPO's had 291 heads?

Re: 840 heads
 

Late COPOs could have 291s. I seem to remember someone talking about an L72 or L78 with a 291 on one side, and 840 on the other, supposedly from the factory.

Re: 840 heads
 

My Camaro has a E 5 9 840 head and a F 12 9 291 on a T0822MN motor 512 casting on G 2 9

Re: 840 heads
 

Thanks guys. I was suspect that maybe this could be correct. Or at least plausible. Now I need a June or early July cast 512 block and all is good.