Re: BX axle code?
 

Yes, BE axle components were unique in their heat treatment.

I've only seen high impact on service parts.

Re: BX axle code?
 

I believe there is a known COPO 4.56 axle for a 1969 Camaro that has heat treated 4.56 gears and a COPO posi unit.

Re: BX axle code?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Fast67VelleN2O</div><div class="ubbcode-body">I believe there is a known COPO 4.56 axle for a 1969 Camaro that has heat treated 4.56 gears and a COPO posi unit. </div></div>
And was it in a COPO 427 car?

Re: BX axle code?
 

Its always been my understanding that in 69 a 4;56 or 4;88 could have been either dealer installed or COPO ordered.If the axle tubes are stamped BWor QG, or for the 4;88 gears BX or QH, that is a definate indication they were COPO ordered.

Re: BX axle code?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kurt S</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Fast67VelleN2O</div><div class="ubbcode-body">I believe there is a known COPO 4.56 axle for a 1969 Camaro that has heat treated 4.56 gears and a COPO posi unit. </div></div>
And was it in a COPO 427 car? </div></div>

I believe it was. It was talked about on here in a previous thread about COPO axles.

Re: BX axle code?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Fast67VelleN2O</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kurt S</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Fast67VelleN2O</div><div class="ubbcode-body">I believe there is a known COPO 4.56 axle for a 1969 Camaro that has heat treated 4.56 gears and a COPO posi unit. </div></div>
And was it in a COPO 427 car? </div></div>

I believe it was. It was talked about on here in a previous thread about COPO axles. </div></div>

Sounds right - 427 cars would get different heattreat - be it the 4.10 that most got or the 4.56 that a very few got.
A 4.56 gear in a 69 Z would be normal gears.

Re: BX axle code?
 

Yes and the car has legit paperwork. It is a white 427 COPO car I saw it at Super Chevy Atlanta 10 years ago or so.

Re: BX axle code?
 

There's one other one out there too.

Re: BX axle code?
 

I'm happy to hear that the rear was swapped at the dealer and the dealer ended up eating it. I'm a loooooooooong time GM dealer employee, and I tell people stuff like this happened and they tell me I am Full of S##T!!! I try to tell them it happened, I know, because I was there.
I know NOTHING about the car in this thread, but I had to throw in my 2cents about the dealership story! HA!!!

Re: BX axle code?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kurt S</div><div class="ubbcode-body">There's one other one out there too. </div></div>

I believe that there was a burnished brown original COPO 4.56 axle car built.















































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