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Old 09-13-2015, 10:00 PM
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pfilean pfilean is offline
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Default 62 GP curiosity question

At a car show over the weekend. Guy shows up with a nice 62 GP I hadn't seen out before. He had a nice plastic data board to show with it. On the board he stated that it had 3.23 "economy" rear end. The owner seemed confident that was really an economy option. But with the Slim Jim tranny I thought it sounded like a kind of high number. My 61 with the same transmission got a 2.87 instead if the more common 2.69 only because it is a Ventura.

I did find some information that 63 GP got a 3.23 standard (would still have the Slim Jim). Did a 3.23 come as standard in 62 to give the owner even a little more jump at the stop light? With the already low first gear in the Slim Jim it should really jump.

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Old 09-13-2015, 10:08 PM
tom s tom s is offline
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Mine came with the 3.23.Tom

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Old 09-13-2015, 10:29 PM
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It appears from this brochure page: http://www.lov2xlr8.no/brochures/pon.../bilder/13.jpg 3.23 was standard in a GP with the base four barrel carb engine and automatic transmission. You could also get an economy V8 with two barrel carb and automatic transmission for the GP, that one came with a 2.69, or a 3.08 if the car had air conditioning.

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Old 09-14-2015, 10:37 AM
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Yeah - the car was a 4bl so the 3.23 would be right. Didn't think the factory would go that high a number. Thanks guys.

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Old 09-14-2015, 01:23 PM
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Yep, standard on Grand Prix...to back up the performance image!

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Old 09-14-2015, 03:28 PM
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Quote:
Originally Posted by pfilean View Post
At a car show over the weekend. Guy shows up with a nice 62 GP I hadn't seen out before. He had a nice plastic data board to show with it. On the board he stated that it had 3.23 "economy" rear end. The owner seemed confident that was really an economy option. But with the Slim Jim tranny I thought it sounded like a kind of high number. My 61 with the same transmission got a 2.87 instead if the more common 2.69 only because it is a Ventura.

I did find some information that 63 GP got a 3.23 standard (would still have the Slim Jim). Did a 3.23 come as standard in 62 to give the owner even a little more jump at the stop light? With the already low first gear in the Slim Jim it should really jump.
The "Economy" point is just incorrect, its a Performance/Luxury model and was standard with the "Performance" ratio to put it a bit quicker than the heavier Bonnevilles that had the same engine but with less gear.

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