1971 Cuda 340, fuel return line?

[Manuel]

Do Cuda 340 engines have a fuel return line to the tank?

[Skdmark]

It has a fuel vapor return line. Part of the ECS.

https://forum.e-bodies.org/general-topics/7/what-does-the-mopar-terms-ecs-and-non-ecs-stand-for/14565/

[anlauto]

NO, only 440+6 and Hemi's had a 1/4" fuel return line in 1971.
ALL others had a 5/16" vent line as mentioned, but it DID NOT go back directly to the tank, rather to the vent tube in the trunk.

[Manuel]

Thanks to both of you.

[Rich G.]

The vent line goes it this.