Correct T3 Headlight
Thread Starter
Advanced
Joined: Jan 2011
Posts: 64
Likes: 4
Correct T3 Headlight
Hello,
Does any body know when they started using the new style T3 bulb on the 68 production vette?
I have a 1968 built in Sept of 1967 and it has one of the 1967 style T3 bulbs on the car.
I want to replace all 4 bulbs with the correct T3 bulbs for this cars build date. I think the only difference is the markings but I may want to get it judged some day.
Thanks
Eugene
Does any body know when they started using the new style T3 bulb on the 68 production vette?
I have a 1968 built in Sept of 1967 and it has one of the 1967 style T3 bulbs on the car.
I want to replace all 4 bulbs with the correct T3 bulbs for this cars build date. I think the only difference is the markings but I may want to get it judged some day.
Thanks
Eugene
Drifting
Joined: Dec 2009
Posts: 1,349
Likes: 34
From: Porterville Ca
If you look at the Willcox online catalog, it shows the minor differences in the "t" emblem on the headlights depending on the year. I took the Original T lights off my 69 Olds Cutlass and installed them on my 69 Vette. I keep thinking about and upgrade, but either way, I'm keeping these original lights...
Tech Contributor
Joined: Jun 2004
Posts: 20,894
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
I canned the stock headlights (for halogens) years ago, but outside of aesthetics, what technically does the T3 designation mean?
Instructor
Joined: May 2004
Posts: 200
Likes: 0
From: Weaverville NC Sit down, shut up, & hold on!
Hello,
Does any body know when they started using the new style T3 bulb on the 68 production vette?
I have a 1968 built in Sept of 1967 and it has one of the 1967 style T3 bulbs on the car.
I want to replace all 4 bulbs with the correct T3 bulbs for this cars build date. I think the only difference is the markings but I may want to get it judged some day.
Thanks
Eugene
Does any body know when they started using the new style T3 bulb on the 68 production vette?
I have a 1968 built in Sept of 1967 and it has one of the 1967 style T3 bulbs on the car.
I want to replace all 4 bulbs with the correct T3 bulbs for this cars build date. I think the only difference is the markings but I may want to get it judged some day.
Thanks
Eugene
here is the the way to read the ink stamp
Top mark = Trade number (like L with 4001 under it)
second line 5 digit. First digit= Month. Jan =1 on up to Sept =9 Oct=O Nov=N Dec=D
Second digit= Line number built on 1-5. (5=CIM line)
Third digit = Year built (3 for 1963)
Fourth and fifth digit = day of month 1-31. (08 would be the 8th day)
12V is under all of that
One dot on both sides of 12v is First shift
No dots on side of 12v is Second shift
one dot on either side is Third shift
Good Luck remember that ink stamp should be close to build date up to I think six months before
And super nice Vette from another 1968 Fan
Melting Slicks
Joined: May 2009
Posts: 3,079
Likes: 315
2024 C3 of the Year Finalist - Unmodified
Trying to keep correct T3 bulbs in your car will be difficult as they are getting harder to find. I've been paying $20 per bulb just for the correct rib style and not paying attention to dates. The filaments are old and brittle so if you plan on driving your car, you'd be better off putting that correct set in a box for when, if ever, you go to the NCRS judging field.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
