Gas Cap

[Tropicalcats]

I purchased a cap for under my flip top gas cap but it does not fit. Was the gas cap for the 70 Challenger different from the others? Was it a one year only?
Its an L.A. car with all the emission stuff on it does that make a difference as to what will fit?

[Chryco Psycho]

the 70 was different in that it was the only year with a vented cap , but any year should fit under the flip top , the filler neck was probably different too though

[Alaskan_TA]

From memory the filler neck has a larger opening from 1971 on.

Give me a minute and I will take a photo of my 1970 cap and post it.......

[Alaskan_TA]

Two pics;

[Tropicalcats]

So was the 70 a vented or non vented cap when in was an L.A. car with all the emission stuff on it?

[Bullitt-]

couldn't find info under Chally but I believe the Cuda page tells the story( From Rock Auto)
1970 : PLYMOUTH : CUDA : 7.2L 440 cubic inch V8 (U) : Fuel/Air : Fuel Tank Cap View Advice

 Item Price Core Total Add to Cart
  STANT Part # 11623
W/O Calif. Emission System {Regular Fuel Cap} More Info
 $4.10 $0.00 $4.10 
  GATES Part # 31623
W/O Calif. Emission System {Regular Fuel Cap - 2 7/8" Vented Anti-Surge (1 1/2" x 1 1/8" Shallow Cam)} More Info
 $4.57 $0.00 $4.57 
  GATES Part # 31691
W/O Calif. Emission System {Regular Locking Fuel Cap - 2 5/8" Vented Anti-Surge (1 1/2" x 2 5/64" Shallow Cam)} More Info
 $10.28 $0.00 $10.28 
  STANT Part # 11491
W/O Calif. Emission System {Regular Locking Fuel Cap}
**Non-stock item--shipping delayed up to 30 business days** More Info
 $9.23 $0.00 $9.23 

[Tropicalcats]

I have a feeling that the Calif. Emission System locking gas cap will be a hard one to find

[Alaskan_TA]

The original 1970 part numbers are;

Without ECS - 3404 670

With ECS - 3404 667

Best of luck with the search, they are hard to find.

Barry

[Tropicalcats]

The original 1970 part numbers are;

Without ECS - 3404 670

With ECS - 3404 667

Best of luck with the search, they are hard to find.

Barry

 Thanks Barry

Let the search begin.

[MJS73]

I have a regular Stant locking gas cap (bought at Auto Zone or Advance, can't remember) beneath the flip-top on my '73.

Mike

[Tropicalcats]

I have a regular Stant locking gas cap (bought at Auto Zone or Advance, can't remember) beneath the flip-top on my '73.

Mike

 Thanks Mike, I'm trying to keep it all original so I'll start looking for the original piece 3404 667. I've got over a year before I will need to worry about putting gas in my tank.

[brads70]

Here is what I've found, I have a 70 Challenger I just bought from CA I too wanted to use the flip gas cap. I've read that CA  emissions cars and 1971 had an "oddball cap" How you tell is, if the slots in the filler neck are around 1/4"  ( as mine is) then you use the 71 and CA emissions cap. All the rest the slots are about 7/16" to 1/2 " wide.
I just came back from my local jobber with a Gates cap #31723 . It fits great but I'm not sure if it's vented or not? It was all dusty so it had been on his shelf quite awhile but it looks like the bottom  ( second) listing below
I found both on E-bay if this helps?


http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&rd=1&item=350175207089&ssPageName=STRK:MEWA:IT&ih=022

http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&rd=1&item=260375046739&ssPageName=STRK:MEWA:IT&ih=016