Late or Early Corvette
Le Mans Master
Joined: Jan 2007
Posts: 8,081
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From: Omaha NE
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2022 C3 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
Looks like your Vette was built around mid March of '74....
As far as the early/late thing goes with C3s, there's never a definitive answer. Mine was built on 4/29/76. Sounds late right? But almost every time this question comes up on a part, I'm early...........
As far as the early/late thing goes with C3s, there's never a definitive answer. Mine was built on 4/29/76. Sounds late right? But almost every time this question comes up on a part, I'm early...........
Administrator
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From: About 1100 miles from where I call home.
Team Owner
Joined: Jun 2000
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From: Southbound
Cruise-In II Veteran
"Early" and "late" usually refer to a specific running change made during production. Early cars were produced before the change, late cars were produced after the change.
Early and late can also refer to total model year production. A Corvette assembed in September at the beginning of the model year run is earlier than a car assembled in June when model year production was typically winding down.
Early and late can also refer to total model year production. A Corvette assembed in September at the beginning of the model year run is earlier than a car assembled in June when model year production was typically winding down.
Melting Slicks
Joined: Dec 2006
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From: Bay Area CA
CF Community Team
Joined: Mar 2007
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From: Delaware
St. Jude Donor '25
If that is the case...built May 68? Kinda late, but not late enough to see some 69 parts on there like those seen in August 68 cars.....
Is it a 68?
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Le Mans Master
Joined: Jan 2007
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From: Omaha NE
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2022 C3 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
His profile shows a '74........
That's how I came up with the build month....
That's how I came up with the build month....
Thread Starter
Safety Car
Joined: Mar 2009
Posts: 3,558
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From: Oakland California
I'm trying to figure out which are the correct wiper arms for my 74 and there are two different kinds, one with a metal hose for the washer, and one with the plastic or rubber hose. The one with the metal is for the early 74 corvette and the other is for the late 74 corvette. This is why I need help figuring this out.
Drifting
Joined: Jun 2003
Posts: 1,455
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From: Upstate South Carolina
I'm trying to figure out which are the correct wiper arms for my 74 and there are two different kinds, one with a metal hose for the washer, and one with the plastic or rubber hose. The one with the metal is for the early 74 corvette and the other is for the late 74 corvette. This is why I need help figuring this out.
1. Buy a NCRS Technical Judging Manual for a 74. That's the best source for what is correct for your car.
2. Buy the same part as is currently on your car. Assuming it is original.
3. Compare a 74 with the VIN close to yours.
4. Ask the vender what is correct. Although most probably don't know.
Race Director
Joined: Oct 2000
Posts: 12,710
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From: Shamong, NJ
I hate the terms "early and late" when referring to parts or cars. These terms can be really confusing. Some "early" changes accure in the 1st month of production (66 427/450hp's becoming 425hp's) while some "late" changes didn't accure untill the last month of production (such as 79's switching to 85 mph speedos and the 2 door rear storage compartment). GM parts books usually list running changes for a model year as 1st and 2nd design, etc and I try use these terms, when possible, too.
As far as your 74's wipers, I think that the the switch over from the 68 -73 arms with brass lines to the later arms with hoses, probably accured in the first couple months of production. Most running changes made for 74, seemed to be completed before the first of the year. I have a 75 parts book (and maybe a 74) in my office, I'll check when I get in later and see if I can give you anything more definative.
As far as your 74's wipers, I think that the the switch over from the 68 -73 arms with brass lines to the later arms with hoses, probably accured in the first couple months of production. Most running changes made for 74, seemed to be completed before the first of the year. I have a 75 parts book (and maybe a 74) in my office, I'll check when I get in later and see if I can give you anything more definative.
Team Owner
Joined: Jun 2000
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From: Southbound
Cruise-In II Veteran
Nope. That's August of 1982. 82 production ran in to October, 1982 before the last one was produced.
Jordan89: Purchase the '74 assembly instruction manual (AIM). If the wiper arms changed during production, the AIM page showing the installation was probably revised and the part numbers possibly changed . There will be a date for the revision in the title block at the bottom of the AIM page. Use that date to determine whether the change was before your car was produced, or after.
Jordan89: Purchase the '74 assembly instruction manual (AIM). If the wiper arms changed during production, the AIM page showing the installation was probably revised and the part numbers possibly changed . There will be a date for the revision in the title block at the bottom of the AIM page. Use that date to determine whether the change was before your car was produced, or after.
Last edited by Easy Mike; Oct 5, 2009 at 01:28 PM.
Thread Starter
Safety Car
Joined: Mar 2009
Posts: 3,558
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From: Oakland California
This will be very helpful, the guy I bought the car from gave me some other wiper arms that are for an older 60s corvette.
Race Director
Joined: Jul 2001
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If true and they are genuine, they're worth a ton of money. I looked in my NCRS judging manual and it does not mention a date or S/N when the change over occurred.