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#1
10-24-2009, 08:50 PM
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Re: Odd option on LS6 Chevelle
[ QUOTE ]
I have no dog in the fight, but people did unusual things back then, sometimes for a purpose. I believe that I remember seeing at the Gibb reunion, a 67 L78 Camaro royal plum convert, that was ordered with a 308 gear. I believe the owner ordered it that way because he wanted to run down the interstate at 100+ mph. Not everyone back then wanted to go quick fast. Some wanted to go top end stupid fast. As in out run the cops for whatever reason. I remember a particular 64 dodge that could do that pretty well.  FWIWCarry on.  [/ QUOTE ] If it is this one it actually had 2.73s... 
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Learning more and more about less and less... 
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#2
10-24-2009, 09:47 PM
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Re: Odd option on LS6 Chevelle
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. It actually had a 12-bolt with a 3.07 posi in it, and it was date-correct for the car. I´m thinking it was a glitch at the factory that made this happen. Maybe they ran out of 10-bolts and installed the standard Taxi-car 12-bolt instead ? We will never know.
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Anders Stålklint. After selling my COPO 9561 I´m now a "postman" with the main project being a 1966 327 2 dr sedan Chevy II. 
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#3
10-27-2009, 07:51 AM
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Re: Odd option on LS6 Chevelle
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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?
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Kurt S - CRG
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#6
10-28-2009, 12:38 AM
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Re: Odd option on LS6 Chevelle
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.
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Dave C. 68 SS396 Camaro 69 SS396 CB Chevelle Conv. 70 340 Dart Swinger 70 SS396 Chevelle 4spd 70 SS396 Chevelle 70 BB 4spd Monte Carlo 70 SS454 Monte Carlo 71 SB 4spd Monte Carlo 71 SS454 Monte Carlo 71 Corvette LS-5 conv. 71 Corvette LT-1 conv. 71 Corvette LS-6 coupe 72 Monte Carlo 72 Monte Carlo Custom 72 442 W-30 clone 76 Trans Am SE 455 4 spd 85 Mustang GT Conv. 86 Grand National 02 SS conv. 
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#7
10-28-2009, 03:11 AM
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Re: Odd option on LS6 Chevelle
I have seen a lot of 12 bolts in 327 big cars.
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 Steve 68 SS427 Custom Coupe 427/385/M21/3:73 68 Impala Custom Coupe 427/425/M21/3:73 68 Biscayne 2 Door 250/3 speed 68 Caprice Estate 68 Camaro SS396 4 speed
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#8
10-24-2009, 09:59 PM
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Re: Odd option on LS6 Chevelle
Yep, that's it.
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#9
10-24-2009, 10:04 PM
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Re: Odd option on LS6 Chevelle
There seems to be some evidence that any car ordered with the F40 option also got the 12 bolt. True??
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. 
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#10
10-26-2009, 02:34 AM
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Re: Odd option on LS6 Chevelle
Keith, my Impala had the F40 option. But George Z. said it should have been built with a 10-bolt.
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Anders Stålklint. After selling my COPO 9561 I´m now a "postman" with the main project being a 1966 327 2 dr sedan Chevy II.
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