#61  
Old 10-10-2018, 06:12 PM
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Originally Posted by 3tas4me View Post
Is this the project you are working on now or are you finishing your Recaro edition first?
Both. The 81 is coming together, slowly. This one is going to be a major undertaking, so I'd like to hold off on totally blowing it apart until the 81 is a little further along.

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  #62  
Old 10-11-2018, 05:45 PM
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Both. The 81 is coming together, slowly. This one is going to be a major undertaking, so I'd like to hold off on totally blowing it apart until the 81 is a little further along.
I have three of them apart now. I need to get one done.

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  #63  
Old 10-14-2018, 12:25 PM
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I have three of them apart now. I need to get one done.
I hear ya!

The 70 GTO should be coming back from paint in a few months. I think the plan is to get the drivetrain out of the T/A, but keep the car in one piece. Once the GTO comes back, the 70 will be off to body and paint.

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1987 Grand National
  #64  
Old 10-19-2018, 05:33 PM
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Got the drivetrain removed. Initially I hoped the engine would unstick itself, but it really should be rebuilt, so out it comes.

Found a like new Centerforce clutch behind the bell housing.

Also found plastic bits, a spring, and a clip at the bottom of the oil pan. Any idea what they came from?




















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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction"

1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
  #65  
Old 10-19-2018, 05:58 PM
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Plastic bits look like they are teeth from the aluminum/plastic timing chain gear that Pontiac installed during the late 60's/early 70's in an attempt to quiet chain noise. The metal parts look like they're from a hydraulic valve lifter.

  #66  
Old 10-19-2018, 06:14 PM
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Probably the safest bet

Sent from my E6782 using Tapatalk

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  #67  
Old 10-19-2018, 07:23 PM
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Could you please measure the overall length of your drive shaft and post the measurement for me. Through the years I have misplaced mine and I’m not sure what one I need for my 70. There must be about 50 to choose from scattered around four buildings here. Thank you.

  #68  
Old 10-19-2018, 07:51 PM
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Could you please measure the overall length of your drive shaft and post the measurement for me. Through the years I have misplaced mine and I’m not sure what one I need for my 70. There must be about 50 to choose from scattered around four buildings here. Thank you.
Sure thing! I'll measure it tomorrow and report back.

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1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
  #69  
Old 10-19-2018, 09:24 PM
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Thank you. I should have two of them here, the one from the T/A and one from a 70 Z/28 that I unfortunately parted many years ago.

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Old 10-19-2018, 10:03 PM
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Love those OWL Goodyear Eagle GTs -- great looking tires, and great performing in their day (~30+ years ago). They could probably STILL out corner a brand new BFG Radial T/A .

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  #71  
Old 10-20-2018, 03:06 PM
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Thank you. I should have two of them here, the one from the T/A and one from a 70 Z/28 that I unfortunately parted many years ago.
The shaft is 56" long, from the front of the slip yoke to the back.

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1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
  #72  
Old 10-22-2018, 05:47 PM
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The engine is off to the machine shop. (That's not me in the pic, its the machine shop owner.)




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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction"

1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
  #73  
Old 10-22-2018, 06:05 PM
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beware of tossing original parts such as (assuming it's original) the water pump!
I fluked out be having one on the numbers/date correct engine I acquired, but never came across one in the wild.

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2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
  #74  
Old 10-22-2018, 07:20 PM
eaglesan13 eaglesan13 is offline
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I agree on asking for all the old parts. When I did the engine on my 71 trans am a couple of years ago I had Roger (board member "ol pinion head") rebuild my water pump. He did a great job on it for a reasonable price, and the turnaround time was pretty quick as I recall.

Quote:
Originally Posted by unruhjonny View Post
beware of tossing original parts such as (assuming it's original) the water pump!
I fluked out be having one on the numbers/date correct engine I acquired, but never came across one in the wild.

  #75  
Old 10-22-2018, 08:48 PM
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Quote:
Originally Posted by unruhjonny View Post
beware of tossing original parts such as (assuming it's original) the water pump!
I fluked out be having one on the numbers/date correct engine I acquired, but never came across one in the wild.
I double checked before shipping it off, and it wasn't the original pump. If it was I certainly would have had it rebuilt.

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1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
  #76  
Old 10-26-2018, 05:42 PM
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I got the PHS in today. The car was sold out of Steingold Pontiac in Pawtucket, RI. It was ordered with a grand total of 5 options:

Console for $43.68 Code 494
HD Radiator for $10.92 Code 701
Radio P/B for $45.24 Code 401
Floor mats front for $5.07 Code 521
Axle-Performance for $7.30 Code 368

Total cost of the car was $3716.60

Theres two dates on the bottom of the invoice, first is 03-24-70 and the next is 04-23-70. I think that's the date of note, and date of execution? It's very hard to read.

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1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
  #77  
Old 10-26-2018, 07:59 PM
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that's interesting that your car has only front mats;

I wonder how often they were ordered solo(?);
my car has front and rear mats;
I think fro t and rear mats were included with a trunk mat in the custom decor group (or something like that).

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1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
  #78  
Old 10-26-2018, 08:02 PM
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The 70 that I had came out of Springfield ma and was very similar, dlx interior, hd cooling, am radio, spl gears.

Sent from my E6782 using Tapatalk

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others that reside in the barn too
  #79  
Old 10-26-2018, 09:35 PM
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What would the Axle Performance option be? I thought the rear axle tube said COX, which would be a 3.55, but maybe it said COZ which is a 3.73?

I need to look at it again.

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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction"

1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
  #80  
Old 10-26-2018, 09:43 PM
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Quote:
Originally Posted by 72projectbird View Post
What would the Axle Performance option be? I thought the rear axle tube said COX, which would be a 3.55, but maybe it said COZ which is a 3.73?

I need to look at it again.
Is the trans an M20, or M21?

The transmission was a "free" selection (M20 wide ratio, M21 close ratio, or TH400 auto). But if the M21 was picked, the 3.73 ("performance axle") and heavy duty radiator were mandatory inclusions.

My guess is original buyer or dealer that ordered it simply checked the M21 box, and the 3.73 and HD Rad were automatically added to the invoice.

Yes, the axle tube should be stamped COZ.

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