74 and Flip Top Fuel Cap • The Dodge Challenger Message Board

by **daburford** » 29 Dec 2008 23:46

Hi Guys,

Sorry if this has been covered but I couldn't find anything in the archives.

I have a 74 Challenger Rallye 360 and a used 70/71 flip top fuel cap in nice condition that I'd like to install. Aftermarket flip top cap posts say they will fit but I don't see how, unless I need a different filler tube and/or body modification around fill area. It looks like screwing the cap on as is to the outside will sit it out way too far, and inside cap gasket won't be anywhere near the filler tube to seal it.

Thanks, Any and all help appreciated.

by **72challorange** » 30 Dec 2008 0:07

You still need to run a gas cap under the flip top.

Tom

by **Moparman1972** » 30 Dec 2008 0:13

Heh, yeah, I stared at my flip-top cap and filler neck for hours. "How the f*&!????" :oops:

This site saves me from my own stupidity more times than I'd like to think about.

by **daburford** » 30 Dec 2008 0:18

Hey thanks Tom. Stupid me thinking that inner seal on the flip top was supposed to go into the filler tube. What he heck is it for then?

Dennis

by **72challorange** » 30 Dec 2008 0:41

Who knows, looks?

Tom

By tdavist, shot with DSC-P72 at 2007-09-08

By tdavist, shot with DSC-P72 at 2008-04-27

by **Jon** » 30 Dec 2008 1:16

Yours looks to fit quite nice.

by **dave-r** » 30 Dec 2008 11:00

E-body flip caps don't have a seal on the inside of the lid at all so you need a small diameter inner cap.

Charger caps (and some early barracuda flip caps) have a spring mounted seal so you don't need an inner cap on these.

If your quarter panel has been replaced at any time there will be a good chance the flip cap will not fit correctly due to the recessed cap area not being correct on most replacement panels.

by **dave-r** » 30 Dec 2008 11:08

See also http://challenger.mpoli.fi/forum/viewto ... =1992#1992

If you do an acurate enough search you should get a few threads on this subject.