302 Fuel Hose Size?

[Rembrant]

Good morning gents,

I need to know the size of the short little piece of fuel hose on the suction side of the pump in my 84 F150. Anybody know off hand? I don't need to know the length, just the hose size. The truck is not close by at the moment, and I wanted to pick-up the hose today with some other items, and I forgot to check the size. Only a little section of hose, maybe only 4" long, between the fuel pump and the steel line that runs on the frame.

Thanks for your help.

[Gary Lewis]

Good morning!

The catalog is so confusing on fuel lines/hoses.  I don't find much specific application info, and even what little that is there is weird.  And they list sizes from 1/4" ID to 1/2" ID.  But, I believe the one you want is either 5/16" or 3/8", so I would grab a piece of both just to be sure.

[Rembrant]

Thanks Gary,

I know it is between 1/4" and 3/8", but without having it in front of me didn't know for sure which. I'll grab a couple different pieces just to be sure I guess;). Thanks Gary.

[85lebaront2]

I am pretty sure it will be 5/16" as even my 460 had 5/16" fuel hose from the frame to the engine.

[ArdWrknTrk]

I'm used to 3/8" supply and 5/16" return.
This my not be the case with your older 302, but I think if you examine the Dorman replacement hoses applicable to your specific truck that is what you will find.

[Gary Lewis]

That’s my remembrance as well, but I can’t prove it with the catalog.

[ArdWrknTrk]

And this is why I suggested looking at the aftermarket catalog that supplies OEM style fuel lines.

FWIW, should probably just change all the lines you have access to at this time.
The parts are cheap.
Rounding up the tools and making time to get in there is the hurdle.

[Rembrant]

85lebaront2 wrote

I am pretty sure it will be 5/16"...

Well I am home now and the connector line is indeed 5/16", and a whopping 3" long. I have no idea if that is the original line, but that's how I bought it.

I do plan on replacing the fuel tank and the hard steel line if it looks bad, but I'm trying to wait until I take the box off the truck to get at some of those projects.

Thanks for the help guys.

[Gary Lewis]

There should be a hose from the tank to the hard line, and you should replace that one as well, like Jim suggested. I’ve seen those lines ooze gas right through the sidewall.

[Rembrant]

Gary Lewis wrote

There should be a hose from the tank to the hard line, and you should replace that one as well, like Jim suggested. I’ve seen those lines ooze gas right through the sidewall.

Yes sir, I'll be replacing that one as well when I drop the tank. I've kinda set that project aside until I remove the Flareside box for rehab next winter. Clean up the back half of the frame, and change the fuel tank.

[Rembrant]

I'm back to looking for hoses/tubing again...

I have new 5/16" fuel line, and new 5/8" heater core lines, but now I need vacuum lines.

What are you guys using between the carb and PCV valve and between the carb and brake booster?

My original brake booster hose is 11/32, which nobody has, and nobody has any 3/8" vacuum hose either.

Are you guys using 3/8" fuel line for vacuum lines?

[Gary Lewis]

O'Reilly's carries a Gates 11/32" (.34375") hose that says it is a "Light-duty hose specially engineered for power brake applications on passenger cars and light trucks."  And later it says "Vacuum rating 30 In. Hg."

As for the PVC hose, I don't know what the size is supposed to be.  Here's what I find in the catalog for the 302.  Note that it tells us that you are supposed to cut to fit from bulk hose (4090), but it didn't bother to tell us what size 4090.  Anyone know?

[Rembrant]

Gary Lewis wrote

O'Reilly's carries a Gates 11/32"(.34375") hose that says it is a "Light-duty hose specially engineered for power brake applications on passenger cars and light trucks."  And later it says "Vacuum rating 30 In. Hg."

As for the PVC hose, I don't know what the size is supposed to be.  Here's what I find in the catalog for the 302.  Note that it tells us that you are supposed to cut to fit from bulk hose (4090), but it didn't bother to tell us what size 4090.  Anyone know?

I certainly don't know what the "4090" represents, but the PCV barb on my Holley is 3/8", and the barb on my PCV valve is also 3/8". Same with the barbs for the booster vacuum line, both 3/8". I guess I'll go with 3/8" fuel line, that should be fine.

I did find the 11/32" vacuum line online in the US, but it's certainly not available around here. I could order it from the US, but with shipping and exchange it would end up costing me $50 for $5 worth of line;). I'll check around a bit tomorrow for black 3/8" vacuum line, but if nothing turns up I'll try fuel line.

Thanks again Gary, you're always a great help!

[NotEnoughTrucks]

Just checked Rock Auto, who I use regularly and 3' of Gates 27232 11/32 vacuum hose shipped to my address can be had for a total of $15.89 CDN. ($5.55 for the hose and $10.34 for the shipping). 10 days delivery.

Of course, I try to order all I may need in order to spread the shipping cost around a little. Dealing across the border is really not as difficult as it once was.

[Rembrant]

NotEnoughTrucks wrote

Just checked Rock Auto, who I use regularly and 3' of Gates 27232 11/32 vacuum hose shipped to my address can be had for a total of $15.89 CDN. ($5.55 for the hose and $10.34 for the shipping). 10 days delivery.

Of course, I try to order all I may need in order to spread the shipping cost around a little. Dealing across the border is really not as difficult as it once was.

A lot of parts for this project have come from RockAuto! In fact, I have a radiator on the way now which should be here on Monday. However, for the smaller/cheaper items, I usually just buy them locally, and to be honest it never occurred to me to check Rock Auto for that particular hose. Good catch. Had I thought of it earlier I could have ordered it with some other things. Right now, I'm really getting down to the little odds and ends to finish this project (well, finish this part of this project...lol).

And yes, dealing across the border is easier than it has ever been, I agree. The Global Shipping Program that Ebay is using these days is REALLY helpful. I find that very convenient.

I want to put a big push on to get this thing all back together within the next week or so, so I'm trying to find all the parts I need locally. Maybe I'll get the fuel hose for now ($1.50/ft) and order the 11/32 Gate stuff next time I'm ordering from Rock Auto. Thanks for the heads up.