AMC V8 return fuel line pic

Do any of you have a good picture of a return line setup on an amc v8?
Is it 1/4"?
Is it rubber all the way from filter to tank?

My 73 did not have a return and I'm looking for the best way to run one. I believe I'm getting too much pressure for my Holley (flooding), but I have a gauge ordered to verify this.

 

Hum i ran a complete steel line from the front to the rear, between the tank and steel line i put a rubber hoze. it work perfectly since last summer when i did it.

 

No no no no no ... no. Only use long rubber lines if you want a fire. Steel.

Short lengths of rubber hose is ok, but check and replace often.

Vapor was nylon in some cases.

But I kinda doubt that fuel pressure is your problem. Nothing different between a Holley and the factory Motorcraft wrt fuel pressure. The mechanical fuel pumps are pressure-limited already. If you fit an electric pump, you need a pressure regulator if you are above, say, 5-7 psi. The spec for V8 fuel pump pressure is given in the TSM.

 

Can you explain why?

 

Holley states their 4 barrel will flood at 7.5 psi. I may have lost the sock off the pickup which would decrease my restrictions. I've got to drop the tank anyway to fix my pickup, and I'm just looking for input. The gage I'm getting will tell me my pressure.

I believe my carter mechanical pump is rated 6-8 psi.

 

Yup I'd like the reasoning here as well. The short runs you mention to be okay are mainly near the hot intake and exhaust manifolds. I have a steel supply, but that was personal preference.

 

Mine is hard piped all the way down the frame. Only uses short pieces of rubber at the tank and carb. Rubber all the way is a fire hazard because the rubber is too easy to get a hole in it.. And it is out of sight under there. Spew fuel all over the exhaust or where-ever and then the return is spraying even more.. Yes a good candidate for a fire..

 

On the fuel pump, I believe I read where the fuel pumps for the 304 vs 360 will have different psi ratings (the 360 is higher), be sure to buy the correct one for your engine.

I agree with the above examples of rubber line issues. I simply bought long runs of steel brake line in the correct size, then put rubber on the ends near the tank and engine.

And yes, the return line is 1/4"...the feed line is 5/16"

 

Summit lists the same pump used for all AMC V8's:

http://www.summitracing.com/search/.../Brand/Carter/Make/JEEP/Engine-Size/5-0L-304/

Weird thing to me is that the pressure for the "muscle car" pump is 6.5 max psi. Summit doesn't give the pressure for the standard. I believe I have the muscle car one so pressure may not be my problem as Tim said unless as I said earlier my sock came off and now the pump isn't pumping in real conditions with 2 filters. I'll check it when my gage arrives.

 

AFAIK the V8 pressure ratings are all the same (5-6.5 psi). The inline sixes have a lower spec (4-5 psi). Per the '74 TSM.

There is an early and a late V8 fuel pump, but the difference is whether the fittings point up or down, not in the function of the pump.

 

Same thing on napa website...same pump for hte 304 or 360

 

I guess I was thinking about the differences I found in fuel pumps from one year to another...marginally the same though.

Part 6736 for a '79 Jeep:
Pressure Rating: 5.5 - 7 PSI

Part 6505 for a '74 Jeep:
Pressure Rating: 5 - 6.5 PSI