#21  
Old 05-31-2022, 04:43 PM
bobby1971 bobby1971 is offline
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Also the carpet is not very nice, I buy a new one to AMES. Very happy to find the build sheet, the original carper label and a very nice sheetmetal!
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  #22  
Old 05-31-2022, 04:46 PM
bobby1971 bobby1971 is offline
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Very Very more better!
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  #23  
Old 05-31-2022, 05:54 PM
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unruhjonny unruhjonny is offline
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Congrats on the great GTO!

It's sure a good thing you kept information on that 1972 front end!!

Your work looks great so far!!
Good luck on correcting that modified 1972 fender!

You are very lucky indeed to have found that build sheet!!

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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)
  #24  
Old 06-08-2022, 04:21 PM
bobby1971 bobby1971 is offline
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I started to check to what extent everything is matching numbers and with the engine everything is ok: correct engine casting, code "YS" and the sequential number is correct with the body number...
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  #25  
Old 06-08-2022, 04:24 PM
bobby1971 bobby1971 is offline
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this is the build sheet. With the "PX8" code the tires are all black or with white stripe?
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Last edited by bobby1971; 06-08-2022 at 04:30 PM.
  #26  
Old 06-08-2022, 04:38 PM
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Greg Reid Greg Reid is offline
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"G70-14 WW"... Looks like whitewall tires to me but l don't know much about decoding build sheets.

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  #27  
Old 06-08-2022, 04:48 PM
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According to the DeMauro book, the PX8 code of the UPC indicates G70x14-inch Wide Oval whitewall tires.

  #28  
Old 06-08-2022, 06:00 PM
bobby1971 bobby1971 is offline
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My car have a 14 inch Honeycomb but in the trunk i find this and i think is one of the original because have correct code...
"M4" plant (where is this plant? i find M1 and M5 but nothing about M4)
"0" 1970
"8" August
"6" week
"JT" 6x14
Very strange but i think in Switzerland the original "Firestone" were being replaced by "Pirelli" before the car was sold...
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  #29  
Old 06-08-2022, 06:31 PM
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unruhjonny unruhjonny is offline
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I recently looked in this wheel stuff, and am happy to share what I learned, and compiled.

What I observed was that the assembly plants tended to be identified by the first letter, and the plant's manufacturing line was the second character;

Plants:
K = Kelsey Hayes
M = Motor Wheel
T = Norris Industries

So your wheel was manufactured by "Motor Wheel", on their fourth line.

Motor Wheel

Your date decoding needs a small correction;
0 = 1970 calender year (correct)
8 = Month; August (correct)
6 = day of month; 6th

Your wheel was made by the Motor Wheel Company, on the 6th of August, 1970.

Curiously, I have notes about that wheel code only being made up until August 1970;
After August, that code wheel was superseded by the code KU, and if my notes read correct, no wheels were made in September or October 1970 because of a strike.

I would wager a guess that the tire on that wheel was changed, as that wheel shows scratching from a trim ring being on, and off of it several times.

I have read period magazine reviews, and read nothing about Stateside tires being replaced for European manufacture tires.

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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)
  #30  
Old 06-09-2022, 04:52 AM
bobby1971 bobby1971 is offline
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This is a picture in march 1971 to Geneva Autoshow from a brand new Camaro SS and the tires design is a little bit different from the Wide Oval...
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  #31  
Old 06-09-2022, 06:32 PM
bobby1971 bobby1971 is offline
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This is a very mistake: i give a picture of the tires in my original rally wheels.
Is a Pirelli CN72....this tire is born in 1967 and is produced to 1973.
My have a "DOT 301".....is this "30week" of "1970" possible??
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  #32  
Old 06-14-2022, 04:43 PM
bobby1971 bobby1971 is offline
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Nobody has an idea?

  #33  
Old 06-14-2022, 05:50 PM
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unruhjonny unruhjonny is offline
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I didn't realize there was a question in your prior post.

According to THIS web page, that would be a 30th week of "1" year;

Quote:
Tires built before 2000 featured a three-digit date code at the end of the Tire Identification Number. The first two digits of the date code tell you the week that the tires were built, and the last digit tells you the year. For example, a date code such as 306 would let you know that the tire was built in the 30th week of a year ending in 6. There could be confusion of whether the digit refers to 1976, 1986 or 1996, so let’s dig a little deeper.
If the tire is as old as you say, then it would be indicating that it's likely from the 30th week of 1971.
You neglected to tell us the actual tire size;
If it's an GR70-14, then I'd put odds more likely as it being from 1981.

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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)
  #34  
Old 06-14-2022, 06:07 PM
bobby1971 bobby1971 is offline
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Thanks unruhjonny! Is right the rally wheels is the original for my car.
The question is whether in Switzerland the "wide oval" were actually replaced before the car was sold. It seems strange to me that the owner replaced the tires after just one year of driving. As mentioned the DOT is "301" and the car was built in September 1970 and sold to the customer in March 1971
The photo of the camaro wheel was taken in March 1971 and the profile doesn't look like those of the firestone or goodyear that GM normally fitted.
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  #35  
Old 06-14-2022, 06:26 PM
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unruhjonny unruhjonny is offline
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Just to be clear, if 301 is to be interpreted as 30th week of 1971, then that would put it as being made the week of July 11th 1971;
Again, between the 11th and 17th of July.

If your car was sold in March 1971, then that tire is too new to be the original tire.

I would suggest that the tire in question is NOT the original tire that was sold with that car.

When did Europe adapt to metric tires sizes?
Or maybe more specifically, when did Switzerland?

In North America, metric tire sizes only started showing up in the 1980's - and till they became the standard, the older style letter series tires were being sold.

If you do not have conclusive evidence, I'd say that "1" indicates 1981.

I just did a search, and it reads as though Switzerland only went fully metric by joining the international system of units in 1977... But I will assume you to be the governing body in this conversation as to when metric sized tires were being sold in Switzerland.
Canada started going metric in 1973;
I actually have a spare set of 1970 Firebird gauges with a really old KPH overlay on the speedometer.
While the first year of dual (MPH & KPH) speedometers was 1975, the first year that Canadian cars came with KPH as predominant was 1979.

EDIT: Additionally, unless I am mistaken, the 205 section width would be too small for an original tire for your car.
I believe that a G70-14 (OEM as built) would cross to a 225 70 R14;
Is the "V" just an older indicator of the ratio and radial "R" in indicator of it being a radial tire...

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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)

Last edited by unruhjonny; 06-14-2022 at 06:35 PM.
  #36  
Old 06-15-2022, 01:54 AM
bobby1971 bobby1971 is offline
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Wow, i think is a very perfect answer. Your consideration in the past post is also correct "as that wheel shows scratching from a trim ring being on, and off of it several times."
At this time the tire is build in "1981", is the only right solution.
The Honeycomb wheels have a build date code? Where?

  #37  
Old 06-15-2022, 07:24 AM
SD455DJ SD455DJ is offline
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Quote:
Originally Posted by bobby1971 View Post
Wow, i think is a very perfect answer. Your consideration in the past post is also correct "as that wheel shows scratching from a trim ring being on, and off of it several times."
At this time the tire is build in "1981", is the only right solution.
The Honeycomb wheels have a build date code? Where?
Bobby1971, Here is where to find the date codes on 14x7 Honeycombs...backside along the outer lip of the wheel. This one decodes as 'JK' 8 - 8 - 0 (1970).

Dennis
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  #38  
Old 06-15-2022, 12:58 PM
bobby1971 bobby1971 is offline
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Thats is...."JX" "0" "9" "22"......if is correct is "22 september 1970"
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  #39  
Old 06-15-2022, 01:01 PM
SD455DJ SD455DJ is offline
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Correct on the date! Sorry, JX is the correct wheel code too.

Dennis

  #40  
Old 06-15-2022, 01:16 PM
bobby1971 bobby1971 is offline
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Is very nice find all this code information! but now I have other doubts...ahahahaha
The car is "born" with the rally wheels on the build sheet and i have only one on the trunk and on the car is 4 honeycomb with correct code....
The body is 09A (1 week september) and on the PHS documentation the car was assembly on 23.09.1970.
is it correct to think that it was the dealer who replaced the 4 wheels before sending the car to switzerland? This would explain why there are 4 honey and a rally.
Or is the spare wheel usually always made of metal?

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