TBI SS fuel line fitting sizes?

n2xlr8n · Thursday at 9:44 PM

Help!

I'm going to convert the SS TBI lines at the intake manifold to A/N or whatever style fitting- anyone know if that's a 37* flare on the GM factory SS TBI feed / return? It appears the feed is 3/8 and return is 5/16- is that correct?

I searched and found info about converting a L31 intake to marine, but I don't think that's what I need.

GoToGuy · Thursday at 10:22 PM

There not AN or 37°. You might try "Earls plumbing" for an adapter. They make a lot of adapters and other AN similar parts.

n2xlr8n · Thursday at 10:32 PM

GoToGuy said:
There not AN or 37°. You might try "Earls plumbing" for an adapter. They make a lot of adapters and other AN similar parts.

It's a flare- I found these fittings on Amascam:
"ICT Billet TBI/Vortec 87-98 Truck 6AN Male Flare Return Fuel Line Adapter Fitting to Female M14-1.5 Oring"
It's a M16 supply, same style fitting.

n2xlr8n · Thursday at 10:59 PM

Info for someone else converting with ICT Billet PNs (uses stock 37* flares to 6 A/N)

You must be registered for see images attach

GoToGuy · Friday at 4:32 AM

No it not a flare. It's either AN, or JIC. Both are 37°. Household, general purpose, are 45°. It was done on purpose.

TBI SS fuel line fitting sizes?

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