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Old 08-24-2019, 10:44 PM
CONCRETEHART CONCRETEHART is offline
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Default 1976 Bonneville garage stored

35000 miles included door window sticker
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  #2  
Old 08-24-2019, 10:55 PM
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Yours?
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1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.

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Old 08-24-2019, 11:02 PM
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as of the 20th this month
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Old 08-30-2019, 12:33 AM
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Very nice!!!
I can't imagine it not having the 455 engine..
Things to think about...you could have one of those unusual Quadrajets with the 3rd primary metering Rod. Those carbs can be a nuisance if they have a problem. But Cliff will have the answers, if needed.
The catalytic converter should not be a problem, but it is old...if it's not needed, I'd make a straight pipe to replace it...
I'm just going thinking out loud here, hope you have no problems. Hope you post more pictures, and tell more about the car!!!

Again, congrats on a cool car!!!
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1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.

Shut it off
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Buddy, I just shut your Prius down...
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Old 08-30-2019, 08:19 AM
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Good looking Bonnie!
Nice color also.


Have a pic of the window sticker?



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Old 08-30-2019, 11:34 PM
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Default more info

400, 2 bbl, ps, pb, cruise, tilt, ac , manual windows and door locks
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  #7  
Old 08-30-2019, 11:39 PM
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Default sticker

more later
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  #8  
Old 08-31-2019, 12:08 AM
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Rotated for clarity:



The spare tire delete is interesting - I assume there was a shortage at the factory at the time.
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Old 08-31-2019, 01:57 AM
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Looks very well kept. Low-ish option count for a mid 70’s bonneville. Those “economy” 400-2bbl engines become more popular after the late 73 OPEC gas squeeze.
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Old 08-31-2019, 10:25 AM
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A 400 2 Bbl is a GREAT engine!!!
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1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.

Shut it off
Shut it off
Buddy, I just shut your Prius down...
  #11  
Old 08-31-2019, 10:37 AM
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Default and when I need a 455 fix

1975 455 posi bench seat lj
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Old 08-31-2019, 02:20 PM
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I was eyeballing that on craigslist..
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Old 08-31-2019, 06:53 PM
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That is a great looking Bonneville!

I wonder if the spare tire Delete (to be provided by to the dealer later) was a MPG trick? But as previously stated it was probably a shortage at the plant issue.
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Old 08-31-2019, 08:16 PM
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In those years when power was down so much from previous years I think there were two ways to deal with the power shortage... one was to order the biggest possible engine even if you weren’t a performance guy because you wanted at least safe and comfortable power for highways etc or the opposite way of looking was to give up and get the smallest engine possible since they were all slow anyhow.

I recall many friends who fell on either side of the thought process.

The 400 2bbl in 76 was standard on the base Bonneville (the 400 4bbl was standard on the Brougham). The 2bbl was rated 170 horse, the 4bbl was 185 and the 455 (4bbl) was 200.

With the high weight and long legged axle ratios of these cars 170 horse was iffy but just pulling the Cat and installing duals would give you an easy 20 horse
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1969 Ventura 2 Seat Wagon
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Old 08-31-2019, 08:50 PM
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Default thanks for the input

just happen to have a 4bbl set up off 76 trans am norm other options available 1963 Lemans 444 convertible, 1963 Lemans 326 3 speed convertible, 1964 Mercury Montclair Moms new car, 1965 Grand Prix 389 3 2 bbls 3 speed , 1966 Cadillac Deville convertible, 1975 Grand Prix LJ 455, 1975 Ventura coupe Pontiac 400 4 bbl turbo 400 posi, 1986 2+2, 1986 Grand Prix LJ, 1987 Grand Prix,
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Old 08-31-2019, 10:43 PM
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Your collection is as wide as mine is narrow!
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1969 Fbird TA Hardtop
1969 Fbird Sprint & 400 Convertibles
1969 LeMans 4dr Hardtop & Convertible
1969 GTO (Hardtop & Convertible)
1969 GTO Judge Hardtop
1969 Cat Convertibles (2 of them)
1969 Ventura 2 Seat Wagon
1969 Executive 4dr Sedan
1969 Bonnie 3 Seat Wagon (2 of them)
1969 Bonnie Brougham 4dr Hardtop & Convertible
1969 Grand Prix SJ's (2 of them)
1969 2+2 2dr Hardtop (Canadian model)
  #17  
Old 08-31-2019, 11:26 PM
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One of my fellow Pontiac enthusiast's sold Pontiacs while he was going to Engineering school. He sold them from 1970 till 75, I think. He bought a new 68 GTO, it was void of options. He raced it a lot. He for some stupid reason (his words) ., ordered a new 73 Gran Prix, traded the GTO against it (OMG!). The general consensus was since 455 "D" port engines were such poor performers, that a 400 would be a better choice. He ordered his GP with a 400.....

He just sold his GP to a classic salvage yard. He lost his lease at a storage place and had 15 cars that had to go places.
The amount of cars he still has makes you 2 guys stuff look insignificant..(not knocking either of you, he just has too much stuff).
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1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.

Shut it off
Shut it off
Buddy, I just shut your Prius down...

Last edited by 77 TRASHCAN; 08-31-2019 at 11:33 PM.
  #18  
Old 08-31-2019, 11:28 PM
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Quote:
Originally Posted by CONCRETEHART View Post
just happen to have a 4bbl set up off 76 trans am norm other options available 1963 Lemans 444 convertible, 1963 Lemans 326 3 speed convertible, 1964 Mercury Montclair Moms new car, 1965 Grand Prix 389 3 2 bbls 3 speed , 1966 Cadillac Deville convertible, 1975 Grand Prix LJ 455, 1975 Ventura coupe Pontiac 400 4 bbl turbo 400 posi, 1986 2+2, 1986 Grand Prix LJ, 1987 Grand Prix,
Does your Mom 's Merc have the rear window that rolls down?
Glad to see you have Pontiac knowledge!!!
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1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.

Shut it off
Shut it off
Buddy, I just shut your Prius down...
  #19  
Old 09-01-2019, 12:27 AM
CONCRETEHART CONCRETEHART is offline
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Default mercury

yes 330 hp 390 dual exhaust 4 bbl mercomatic sliding rear window
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  #20  
Old 09-01-2019, 01:14 AM
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Oh my. Some rural folks outside of the small Eastern Iowa town I lived in, growing up in the 60's had one exactly like your Moms. It was black, very nice. They dropped it off at my Dad's Skelly station for some work..
I innocently asked Dad, if we could put the rear glass down...he quickly replied, no way. What if it won't go back up...I understand his thinking better, these days!!!
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1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.

Shut it off
Shut it off
Buddy, I just shut your Prius down...
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