67 COPO Chevelle ???

[YENKO DEUCE REGISTRY]

It is possible that GM utilized another engine code for a different application. I don't know that GM ever installed such a '67 Chevelle combination, but they did use the same engine codes for various installations. For example, the Yenko Deuce Nova has CTB and CTC coded engines, which per the books are for '70 Camaro Z28's with four speed and a/t respectively.

[mike32]

I HAVE HEARD OF THESE CARS (66-67 SS427 CHEVELLES), ALTHOUGH NEVER SEEN ANY DOCUMENTATION ON ONE. HAVE ALSO HEARD OF A 1970 ELCAMINO WITH LS6 AND ALUM. HEADS, AGAIN NO DOCUMENTS TO VERIFY. ANYTHING COULD HAVE BEEN POSSIBLE!
MIKE

[Kurt S]

Marlin,
They only shared engine codes if the engine assemblies were identical. Same manifolds, distributor, etc. Not sure if any 67 Chevelle engine codes were shared with other 67 carlines. If they were all unique to 67 Chevelle, then that closes that door. [img]/ubbthreads/images/graemlins/smile.gif[/img]
Same thing on axles, that's why the Nova and 1st gen Camaro shared axle codes. Same dimensions, same axles.

[YENKO DEUCE REGISTRY]

You are correct KurtS. It is believed that Yenko ordered the Deuces with the Corvette LT1, but GM installed the Z28 version due to the exhaust manifolds being the same as the Nova's. The axle codes were also the same for Camaros and Novas through '69, before the '70 Camaro got a little wide! I am not sure what engine would fit into the '66-7 Chevelle without changes, and could share an application code. It's just a thought though!

[JoeC]

Doug Marion is very knowledgeable and a good writer but I think he is not remembering correctly on the 67 Chevelle. Chevy got tight on HP in 67. They did not offer the 427 425 in the big pass car although some say a few slipped out (less then 10). The 425hp 427 was available in 66 and 68 big cars. Even the 375 hp 396 was hard to get in the 67 Chevelle and many dealers told customers they were not available. So it's hard to believe there was a 427 Chevelle in 67.