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#21
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Tunas73TA, what's the build date on your car?
06D?
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#22
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07A
So that means the first week of July... Correct? Forgive my ignorance but: Hows that jive with 622731 # stamped on the frame?
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chuck... 1973 455 TA (07A) |
#23
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June (6) 22, 1973, 1st shift. My '74s don't have the letter stamp also. There may have been more than 1 frame builder in the early stages.
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#24
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I've used to think maybe the (1) and (2) might signify the division code, 1 for Chevrolet (camaro) and 2 for Pontiac (firebird). But, I have seen birds with a 1 enough times to believe I am wrong. I then thought they might be the shift (as Ransom suggests). Maybe so, or maybe they are codes for different suppliers. I know the N is not for Norwood, I have seen a bunch of Van Nuys cars with N subframes.
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#25
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The S was probably for the A.O. Smith Co. Maybe Kurt S. or another Camaro guy knows another subframe supplier.
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#26
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I'll add my numbers to this.
My Norwood 09A car has a frame stamp of 82670S2. August 26, 70. Just what you might expect for the date.
My Van Nuys 12B car has a frame stamp of 11671N2. January 16, 71. Seems odd, but my build sheet for this car shows an initial date in the upper left corner of 12-14 that was crossed out and a handwritten date of 1-25 right above it. And my PHS shows a shipped date of 01-29-71. For what ever reason this car seems to have been held up after it got its trim tag but before it went to final assembly.
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1966 Ford F250 Deluxe Camper Special Ranger Custom Paint - San Jose plant http://www.ford-trucks.com/forums/12...al-ranger.html 1966 Ford F250 4x4 Red/White 4-speed - San Jose plant 1966 Ford F250 4x4 White 4-speed - San Jose plant http://www.ford-trucks.com/forums/11...-f250-4x4.html 1971 Trans Am White/Blue 4-speed limited options - Norwood plant http://forums.maxperformanceinc.com/...d.php?t=757496 |
#27
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Quote:
I'm with HFR on his description. I wonder if the S2 (or 1) is Shift 2 (or 1)
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#28
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72 TA 4spd
03D build with 32072S1 |
#29
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Different vehicle but still GM. This could be the answer to the S1, S2, N, question.
MY 1964 Corvette with a Powerglide has the date stamped on the bottom of the oil pan. It is T1029N. Which I have learned through NCRS information sources to mean "T" Toledo 10 (Oct) 29th "N" Night shift. For this discussion S1, S2, & N Shift 1, Shift 2, & Night Shift. I have seen N used on other parts as a shift indicator.
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When removing an unreplaceable washer, the part will be heard hitting the floor and then vanish from the face of the earth! |
#30
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So, they had S1, S2, N1 and N2 and that indicated 1st shift, 2nd shift, and nights and ????.
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#31
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I think Mike is correct probably on the 'S' being the frame manufacturer, Smith in this case.
The number after the 'S' would be the shift.
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#32
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oh - cool!
How did I never see this thread! I'll now have to crawl under my car to see what it shows... My car was monkeyed with, so hopefully it has the correct subframe!
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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) |
#33
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I believe the S is for A.O. Smith frame works and 2 would be second shift.
Cannot remember who the N was for. I think Northern steel. Saw it in my GM parts interchange manual under frames and suspension section.
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White/Blue 71 455 HO T/A Auto Blue/Blue 71 455 HO T/A 4 Sp White/Sandalwood 71 455 HO T/A 4 Sp White/Black 70 RAIII T/A M21/373 (stripper) Carousel Red/Black 69 GTO Judge 4 Sp 2002 Firehawk Red/Black 6Sp |
#34
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ok, I finally found my number;
Opinions on this one please! From another recent thread, it appears to be a 1970 subframe... If my interpretation of prior posts in this thread is correct, this looks to read as: May 28, 1970; Northern Steel; shift 2(?) May car's build date is 06A.
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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; 07-21-2018 at 07:59 PM. |
#35
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Yes, May 28, 1970. And that would work for an 06A car.
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keith k 70 Trans Am RA III / T400 / Lucerne Blue / Bright Blue 70 Trans Am RA III / M20 / Lucerne Blue / Sandalwood 70 Formula RA III / M21 / Lucerne Blue / Bright Blue |
#36
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ok, my brother found this number on the passenger side rail on his '77 TA subframe;
He's interested in deciphering if it's original to the car, and worth keeping it vs swapping in one from a '78 donor Firebird: 20521N7 It appears as though little is known about these stamped frame date codes - which is probably why I had never heard of it... the closest I came to any sustancial information was a nastyz28 thread where the owner of an '80 posted a picture with a similar number sequencing... his ended in "0" which leads me to believe that the last digit of the year moved to the end when the date/source/shift information changed. help!
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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) |
#37
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A pick of my 70 4 speed esprit frame
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If your not at the table you're on the menu A man who falls for everything stands for nothing. Last edited by Formulas; 12-17-2023 at 10:11 AM. |
#38
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Quote:
Thanks |
#39
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I'll say...
2 - shift, 2nd shift 05 - month, May 21 - day, 21st N - frame manufacturer 7 - year, 1977
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So long, farewell. |
#40
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Very close on those date numbers. Stub-frame date of March 4th and scheduled build date on the Trim Tag of March 12th.
Almost sounds like modern assembly line "supply on time" builds. |
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