Odd option on LS6 Chevelle - Page 3

vintagez · #21 10-26-2009, 06:49 PM

COPO Anders, I do not think I ever said whether your car came with a 10 or 12 bolt rear end as my documentation does not show that, you must look in the parts book and use the axle ID to see what is correct. Regarding the GV or GY not really defending myself, just curious what was written, whether it was by me or someone else. Lots of documentation floating around that has been done by other people in the 'old days' and if I made a mistake would like to catch it. I am always willing to re-check what I have done as in life I have learned I am not perfect, but do my best.

**Kurt S** · #22 10-27-2009, 07:51 AM

[ QUOTE ]
It´s another story but I had a 1967 Impala with a 275 hp 327 that was built in Canada. It was supposed to have a 10-bolt rearend with a 3.08 posi in it.

[/ QUOTE ]
What trans was in the car?

68l30 · #23 10-27-2009, 05:07 PM

My 68 L-30 Camaro was ordered with a 2:56...Ugh, slug...but a fright on the highway..

Big

**Kurt S** · #24 10-27-2009, 09:16 PM

Steve,
That was a special order. I've only seen one other L30 with that axle.

COPO_Anders · #25 10-28-2009, 12:12 AM

First of all I want to apologize for highjacking the thread. I didn´t mean to do that.

George, when I asked you about the 12-bolt rearend on the car you told me to read through the material you had sent me. After doing so I was convinced that it should have been built with a 10-bolt, just like you said. I therefore thought that the 12-bolt was put under the car at the factory by mistake.
But when Keith wrote: "There seems to be some evidence that any car ordered with the F40 option also got the 12 bolt. True??" I started to think that it maybe wasn´t by mistake.

So did F40 cars get 12-bolt rearends ?

Kurt, it has a powerglide as you can see in the document.

**DaveC68** · #26 10-28-2009, 12:38 AM

My 68 L-35 Camaro was ordered with and still has the 2:56 Posi 12-bolt (code "PO" also calls out "w/metallic brakes") not sure what the signifigance of that was...but its the only 68 Camaro rear listed as such in the reference manual I have.
Original owner ordered that way, and recalled problems and warranty work on the TH400, which he suspected was due to the rear gearing.

Tarrytown SS427s · #27 10-28-2009, 03:11 AM

I have seen a lot of 12 bolts in 327 big cars.

**Kurt S** · #28 10-28-2009, 05:21 AM

Dave,
I don't think the PO code was anything other than a 2.56 posi. No idea why the Metallic Brake note, it is the only ratio in 68 with that note...
Did it have the original rear brakes shoes when you got it?

Steve / Warren,
Didn't the F40 suspension add another control arm? If so, was the mount on 10 bolts or only on 12 bolts?

**DaveC68** · #29 10-28-2009, 05:37 AM

[ QUOTE ]
Dave,
I don't think the PO code was anything other than a 2.56 posi. No idea why the Metallic Brake note, it is the only ratio in 68 with that note...
Did it have the original rear brakes shoes when you got it?

[/ QUOTE ]
The car had 43k on it when I got it, I think they had already been changed...I changed them before putting her back on the road (sure I still have what I took off somewhere)
I know I have seen that note in more than one place...it was the only code/ratio to call out the metallic brakes...not sure why?
Dave

**Kurt S** · #30 10-28-2009, 05:55 AM

They didn't need done at 43K, but it's not uncommon for people to be talked into having them serviced.
My SS has 90K miles on it and the rear drums have never been off.

Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars.