CESSNA 337 3M-4014 Sound And Vibration Damping Panels.

[n86121]

I note your transition year is ‘74.

Yes
The fuel system does get simpler after 73.
Like a huge Cessna 172,
vs 4 tanks earlier.

Interestingly,
in the turbo C and D models
When using aux tanks
the excess (unused) fuel*
Goes back to the “manifold”
Right back to the engine!
NOT to the aux or mains.
So no guesswork!

When you have used 15 gals from aux
you have used 15 gals from aux
And no mystery fuel added to mains
Or overboard.

*I believe fuel pumps must deliver
150 % of max fuel engines might require.
For Engines that might use 20 gph, fuel system must deliver 30 gph
So at lower power lots of “excess” fuel from pumps
Has to go somewhere.

Also,
Having seen it up close at potomac.
I no longer desire the later model split door
Very “tunnel” like in person.

I have always liked and used my cargo door often.