Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
IF it is for your '78, it will be(should be) non-vented. GM did offer locking caps as accessories from the dealer, but not all of the ones the dealer sold were in fact GM supplied. Most dealers would just get them locally from a parts house. There should be something on the cap indicating if it is vented or not, but there may not be. I would venture to say that any cap made for a thread-on type fuel tank would be non-vented, per EPA regulations.
____________________________________ Joel Adams C3VR Lifetime Member #56 My Link
Vette(s): 1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top
That would be really neat if it is a GM gas cap..they ussually don't last that long..the lock part that is..if it still works as I assume it does I would treat it to some old fashioned graphite in the lock mechanism..keeps it moving..what a find that is.
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Corvette (Vette) Model Years on this site: 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982