Fuel line...5/16" to 3/8" transition at pump?

[67JimmyMO]

My truck is a 67 GMC SWB, originally with a 250 6 cyl, now has a mildly built 383 stroker.

I have the factory 5/16" steel line that runs from the in-cab tank, then it goes along the frame, stopping in the engine compartment near the fuel pump.

From that point I have a piece of 5/16" rubber going into some brass fittings (5/16" nipple-->coupler-->3/8" nipple) and then a piece of 3/8" rubber line to match the inlet tube size on the fuel pump.

I don't like having that brass transition and wondered if there was a better way to do this section of fuel line?

I tried clamping a piece of 3/8" rubber line onto the 5/16" line from the tank but didn't like that. I did not try to stretch a piece of 5/16" rubber over the 3/8" fuel pump inlet.

What are you guys doing in this situation?

The parts guys tell me they can't get a SBC fuel pump with a 5/16" intake tube.

[Grumpy old man]

Order a (TSP brand) (model jm1003c) fuel pump off ebay About $50.00 they have threaded intake and output lines and you can bolt on any size barbed adapter you need , Also reroute your battery leads away from that cramped area by the pump or increase your insurance to include fire damage !

[67JimmyMO]

Thanks Grumpy, that looks like just the ticket, never seen those before.

Currently I have a factory metal line (for a QJet I think) that goes vertical from the outlet of the pump, up behind the alternator, then turns 90 degrees about 3" and goes back to 3/8" rubber line to the carb inlet. It feeds an Edelbrock Carter AFB.

Looks like the female threaded connections on the TSP pump are 1/4" NPT, so I'm thinking I will need an adapter on the outlet to go with my current metal line setup.

Oh, and yes, the battery cables have been redone, that's an old pic when I was just trying to start it the first time, with what I had.

[Grumpy old man]

don't reuse old fittings on fuel line ,Replace with new it really doesn't cost that much to set it up right and never have to worry about used fuel line fittings .It will leak or fail when you least expect and IT IS really worth a couple extra dollars to do it right !

[67JimmyMO]

Will do, I know exactly what you are saying there. Back in the day I caught a Toyota pickup on fire because I tried to rig a fuel line to get me by.

Burnt a few wires before I got it put out, coulda been much worse.