#5601  
Old 11-21-2022, 08:45 PM
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wow ... amazing that those dots were connected so many years later.

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  #5602  
Old 11-22-2022, 06:38 AM
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Default 23P100039

Wanted to share some pictures here. Finally had time to collect and unpack.
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  #5603  
Old 11-28-2022, 02:41 PM
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Here is the intake 490471 which does not sport the LS2 or LS2 X. Click image for larger version

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Old 11-28-2022, 02:47 PM
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Also if you look at the cylinder heads their was some holes that have been plugged .

Also the block number stamped on the pad is 490132 but the block is stamped 212 not the usual 132 that we are used to seeing. Click image for larger version

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Old 11-28-2022, 03:21 PM
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Thanks for all the pics!

That intake with the EGR setup made in 1971 is cool. They knew back then they would need the EGR setup.

Edit: This was in a 1973 GA so needed the EGR manifold.


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Last edited by johnta1; 11-28-2022 at 03:47 PM.
  #5606  
Old 11-28-2022, 07:12 PM
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Thanks for sharing the story on this! This has to be one of the coolest finds in a long time. I'm really surprised that the engine survived being that it was cast so early before the actual production of SD's began

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  #5607  
Old 11-29-2022, 11:10 PM
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Road test of SD TA and SD GA:





Think this is the GA?


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  #5608  
Old 11-30-2022, 08:45 AM
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Great read and thanks to all those for sharing the info with us to enjoy. Cheers

  #5609  
Old 11-30-2022, 09:08 AM
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Default TA VS GRANDAM

What is the chances of that.
My 73 TA up against the 73 Grand Am and they will be together again also lol .



Quote:
Originally Posted by johnta1 View Post
Road test of SD TA and SD GA:





Think this is the GA?



  #5610  
Old 11-30-2022, 10:21 AM
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Quote:
Originally Posted by mscicluna007 View Post
What is the chances of that.
My 73 TA up against the 73 Grand Am and they will be together again also lol .
Unfortunately, the two cars in the article above are neither of those whose VINs we know today. The timelines just don't workout.

The article above is from the October 1972 issue of Motor Trend magazine.

Michael's Super Duty Trans Am (magazine test car) wasn't built until December 1972.

The recently-discovered Super Duty Grand Am was built in mid-September 1972. While at first it may seem plausible, publishing lead times were at least 2 months out back then, so it's impossible that the recently-discovered Grand Am was that shown in the Motor Trend article.

Furthermore, I can confirm that the images above were taken at Pontiac's 1972 Long Lead Press Preview held at GM's Milford Proving Ground in late-June 1972. The photos still exist in Motor Trend's photo archive and possess a development date of July 1972. Both of these cars along with a number of other Super Duty 455-powered engineering mules were available for magazine writers to test drive. It was at this same event that High Performance Cars magazine awarded the 1973 Super Duty GTO is Car Of The Year award.

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Old 11-30-2022, 05:00 PM
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Default Thanks Rocky

Glad you set it straight Rocky.
They do look similar. You always spot the details.

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