69 Gas Caps revisited - original Cap?

[1968RSZ28]

Mine also has a marking on the on the tab but it does not show well in the first photo. mine appears to read "GM" inside two circles. Here is a fresh photo of the logo.

Tom -

Do you think yours could be stamped "SM" as in Richard's photo above?  SM = Stant Manufacturing.     

Paul

[tom]

Paul,

Not positive, but it looks like "GM" to me. It also appears to have two circles stamped around it instead of one like in the "SM" stamp shown on Richards cap. There is not enough to be positive what was stamped. The rivet does have the large "S" like the other caps.

Tom

[JohnZ]

Mine also has a marking on the on the tab but it does not show well in the first photo. mine appears to read "GM" inside two circles. Here is a fresh photo of the logo.

That's actually "SM", with the horizontal line missing. The "S" on the center rivet was on all Stant caps, and the "SM" logo is for Stant Manufacturing.

[tim69camaro]

This video has a good shot of the gas cap. Ironically look 3:02 (but it is not a Z28) minutes into the video on the CRG youtube channel. It appears to have raised letters, ears and shows the handle perpendicular to the line in the cap. https://www.youtube.com/watch?v=Bjq-KbGlKwM

[abiddle]

Nice catch!

[m22mike]

I watched that video a while back, and did not believe what I saw, and that was the cap with ears.
 I have restored a bunch of the round caps over the years and looked at quit a few original cars with there born with assy line gas caps including 1970 Chevelle's that used the same "Round" Stant vented anti-surge cap.
 I would have argued long and hard that the ear cap had not even been made in 1969.
Any thoughts on the one in the video ? Maybe a early engineering test thing ?
 Shauger have you seen the video with the ear cap ? Interesting, never say never ?

Mike

[jdv69z]

Here's what I believe to be my original gas cap. On the one tab is "SM" surrounded by 2 circles. The "S" is kind of funny shaped in that it has a straight line between the 2 arcs of the "S" I've included pic, but it's very hard to see.

[Pacecarjeff]

I watched that video a while back, and did not believe what I saw, and that was the cap with ears.
 I have restored a bunch of the round caps over the years and looked at quit a few original cars with there born with assy line gas caps including 1970 Chevelle's that used the same "Round" Stant vented anti-surge cap.
 I would have argued long and hard that the ear cap had not even been made in 1969.
Any thoughts on the one in the video ? Maybe a early engineering test thing ?
 Shauger have you seen the video with the ear cap ? Interesting, never say never ?

Mike

I would also have argued that there were no gas cap ears in 1969.   
And this is not a case of different vendors - these were all made by Stant.

All the yard cars that I was 100% sure were original and had been crashed back in the day had the no ears cap. 
But who really knows for sure? 

Hey that sure makes it easy, that one looks just like the cap they are selling at walmart today....   LOL 

 

[abiddle]

Its time to stop discriminating against those of us with ears. I spent all day cleaning mine in evaporust. Pics of mine with ears and SM stamp. Maybe ears with SM stamp are super rare!

[z28z11]

Maybe we should start another poll - here's my 2 from the Z11 and the X77 - notice the clocking of the ears as compared to the previous pics.

I know, they need to be soaked for a week or two in Evaporust -

Regards,
Steve

[z28z11]

Interesting - rich69rs's March 10, 2008 picture of his 01C '69 happens to be the exact week my X77 was started. Caps look pretty darn close - just noticed the date when I pulled it up.

Regards,
Steve

[abiddle]

Mine is an 11C Norwood, sorry I should have mentioned that.

[HawkX66]

My 08D 69, No ears.

[jdv69z]

Here's what I believe to be my original gas cap. On the one tab is "SM" surrounded by 2 circles. The "S" is kind of funny shaped in that it has a straight line between the 2 arcs of the "S" I've included pic, but it's very hard to see.

Build 10B Oct 68

[z28z11]

Starting to look and sound like the old "early vs. late" design deal. Wonder if we can get close to a time period when it changed - if enough people respond, we can probably get there.

My 2 - 01C X77, 03D Z11. I need to go get a pic of the 12A L78 car to go with them.

Regards,
Steve