12 bolt axle codes??

[SYCIWISH]

In the COPO and other Yenko type supercars from 68-69 is the BE coded rear the only acceptable code or could it be BV coded when equipped with 4.10's. thanx , DAVE

[COPO]

Only "BE" rear for the COPO 9561 and 9560 cars (factory installed iron and aluminum block 427's). "BV" sounds like a Z-28 or SS rear.

[Stefano]

The BV rear used a different ring and gear, case, spiders, springs and plates ,than the COPO exclusive BE.

[Unreal]

Were the unique parts of the BE rear made just for the COPO, or were they taken from the parts bin for other vehicles, such as truck?

[SYCIWISH]

It came out of a 68 L-78 car. thanx for the help. DAVE

[Keith Tedford]

In the Chevelles, GM had two different 4:10 coded rearends. Our L78 car has the KK unit while the COPO car has the MQ piece. The same would apply to the Camaros. My parts books list the MQ rearend but doesn't show any special parts in the parts listing. An original '69 parts book might be a better source. My book is a 1981 reprint.

[YENKO DEUCE REGISTRY]

MQ? I thought the COPO Chevelles received KQ's?

[Chevy454]

Yeah, I think Tedford got his alphabet mixed up! Block was "MQ" (or "MP") and the rear was "KQ".

Look here: https://www.yenko.net/dealers/yenko.htm

[Keith Tedford]

Yeah, I got my mords wixed and my tingers fangled on the keyboard. KQ rearend and MQ motor for us. [img]/ubbthreads/images/graemlins/wink.gif[/img]

[rpoz11]

And the ring and pinions for a BE vs a BV or others is a different GM #???