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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


How many

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Post by Joker1570 Wed Jun 19, 2013 1:37 am

I'm in the process of buy a 1973 Pontiac Grand Am that has the 455 or 7.4 liter engine in it I was want to know how many of these cars were built with the 455. Any info will be appreciated Thanks in advance.

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Post by Pontichev327 Wed Jun 19, 2013 9:43 am

According to records, there were 153,899 total Grand Prix's made in 1973. The "J" model was on 133,150 of them, and out of those there were 9,812 made with the 455. The model "SJ" which came with the 455 as part of the option and made up 20,749 units.  So together the "S" models with a 455 and the "SJ" with 455's  total 30,561 units. Not rare at all, but it's hard to find a good one left these days. Good Luck!
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Post by DoctorLarry Wed Jun 19, 2013 9:52 am

I think he wanted Gran Am stats, not Grand Prix..

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Post by dragons_lair59 Wed Jun 19, 2013 10:38 am

Yup grand am
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Post by Pontichev327 Wed Jun 19, 2013 11:15 am

Wow! My eyes are getting bad! Sorry about that. I have looked at all the Pontiac sites and my books and there is no breakdown for how many 455's were installed. Only that it was available, and we already knew that. Maybe PHS can come up with a number, they can tell you what your car had on it when new, but I don't know if they have total numbers on specifics like that. I found the Grand Prix info easily, but the only thing on GA's is two door and four door totals and the estimate on how many four speeds(187) were made. No mention of 7.4 vrs. 6.5 litre engine totals that I can find. I can say they were not uncommon back in the day, as I used to see quite a few. Today, who knows though...
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Post by Pontichev327 Wed Jun 19, 2013 11:19 am

I have a 73 with the 6.5 (400) and it is a great driving car. Good Luck on getting it, you will love the road feel and ride they have!
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Post by 77mali Wed Jun 19, 2013 1:03 pm

Check the Vin # to confirm it's a "real" 455.  For 1973 the 5th digit s/b one of these:

W= 455 4 Bar. Carb., Single Exh.

X= 455 4 Bar. Carb., Perf. SD (no SD 455 G/A was ever released to the public- the 1 they built was crushed by Pontiac- but hey you never really know.)Very Happy


Y= 455 4 Bar. Carb., Dual Exh.

If you can read the number on the engine block pad still- the letter will be in that mix somewhere & would at least indicate a "numbers match".

As far as actual production numbers...I agree check with Pontiac Historical Services.
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