Gas Cap
#1
Racer
Thread Starter
Gas Cap
Does anyone have a photo of an 0riginal Gas Cap for a 77'. I'm looking to replace the one I have. I want one that looks like an original. I found them on vender sites, but don't if there correct.
#2
Safety Car
These are tough to find. I browse swap meets (Carlisle) just looking for these caps. Several years ago, we had a rather in-depth discussion at the NCRS tech board on C3 unleaded fuel caps. No one makes a reproduction so all you will get from vendors are aftermarket or service replacements.
You are basically looking for a cap with an ear and finger grips but there were a few different part numbers used to equip Corvettes during the 1975-77 model years. In 1978, they changed and incorporated finger grips but not the year assigned part number GM# 559346.
So for 1977, the specific cap carried the part number GM# 556389. The GM# 7470051 was used from 75-76 but was similar in configuration to the 1977 cap...any of which will fulfill the function you seek to fill. Both carry the broadcast code NDH as they did in 1978-79.
Hope this helps!
You are basically looking for a cap with an ear and finger grips but there were a few different part numbers used to equip Corvettes during the 1975-77 model years. In 1978, they changed and incorporated finger grips but not the year assigned part number GM# 559346.
So for 1977, the specific cap carried the part number GM# 556389. The GM# 7470051 was used from 75-76 but was similar in configuration to the 1977 cap...any of which will fulfill the function you seek to fill. Both carry the broadcast code NDH as they did in 1978-79.
Hope this helps!
Last edited by hunt4cleanair; 12-31-2014 at 04:45 AM.
#3
Holy cow
I was awful about gas caps as a young man in the 70's......I was always driving off leaving my cap at some pump .
I bought 25 caps during a ten year period as I slowly learned my lessson to slow down
I never lost the 74 , my first corvettes cap. It was the change to the 78 and 79 slope back , had something to do with my habits of holding the cap while I fueled . I was turrible at losing caps on that 79 in particular.
I found the gas tank sticker recently while cleaning out the book case. Hadn't seen it in 30 years .
I was awful about gas caps as a young man in the 70's......I was always driving off leaving my cap at some pump .
I bought 25 caps during a ten year period as I slowly learned my lessson to slow down
I never lost the 74 , my first corvettes cap. It was the change to the 78 and 79 slope back , had something to do with my habits of holding the cap while I fueled . I was turrible at losing caps on that 79 in particular.
I found the gas tank sticker recently while cleaning out the book case. Hadn't seen it in 30 years .
#4
Melting Slicks
Member Since: Aug 2010
Location: Palm Beach Florida
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St. Jude Donor '12
And all along I thought mine was an original, Someone probably lost the original and purchased this one years ago. Sorry for the foot. LOL
Last edited by daanbc; 01-01-2015 at 04:41 PM.
#5
Racer
Thread Starter
Thank You for all your help, I learned a lot. The Gas cap that my 77' is sporting is the original, matching part number 556389. Thanks to HUNTER4CLEANAIR for posting photos. I'm going to keep the one I have. I'll just clean it up a little. The ones that the venders are selling are plastic BS.... Happy New Year Everyone....
Last edited by news2me; 12-31-2014 at 11:37 PM.
#7
Safety Car
Thank You for all your help, I learned a lot. The Gas cap that my 77' is sporting is the original, matching part number 556389. Thanks to HUNTER4CLEANAIR for posting photos. I'm going to keep the one I have. I'll just clean it up a little. The ones that the venders are selling are plastic BS.... Happy New Year Everyone....