LS6 Fuel line sizes? Feed and return?
Thread Starter
TECH Apprentice
Joined: May 2013
Posts: 329
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LS6 Fuel line sizes? Feed and return? Can anybody please tell me what size the feed and return fuel lines are for a single feed line to the fuel rail using the Corvette filter/regulator?
I read that 3/8" for the feed and 5/16" for the return but I want to use a rigid SS pipe for the connection between the filter and the injector rail.
Obviously a 3/8" OD Rigid steel pipe does not have a 3/8" ID due to the thickness of the tube whereas rubber injection hose 3/8" is the ID.
Can anybody help?
I read that 3/8" for the feed and 5/16" for the return but I want to use a rigid SS pipe for the connection between the filter and the injector rail.
Obviously a 3/8" OD Rigid steel pipe does not have a 3/8" ID due to the thickness of the tube whereas rubber injection hose 3/8" is the ID.
Can anybody help?
1. Should have a flex line from frame line to engine, not hard line.
2. You can use 3/8" SS tubing w/ flare nuts and sleeves to connect to 3/8, [#6AN], AN hose fittings. If you don't want/can't flre the tube, use the Swageloc or Parker compression fittings. [Not cheap, but work well]
2. You can use 3/8" SS tubing w/ flare nuts and sleeves to connect to 3/8, [#6AN], AN hose fittings. If you don't want/can't flre the tube, use the Swageloc or Parker compression fittings. [Not cheap, but work well]
Thread Starter
TECH Apprentice
Joined: May 2013
Posts: 329
Likes: 9
Thanks for the reply.
I'm running hard line front to rear the body length. Each end is then connected via SS overbraid injection hose to the pump, filter and tank at the rear and to the fuel rail at the front.
Swagelok or Eaton compression fittings are what I'd planned to use.
My question really relates to the size of hose/tubing since my fuel rail appears to be 3/8" OD so therefore the ID will be less.
So I guess 3/8" OD hard line should be fine for the main front to rear run?
I'm running hard line front to rear the body length. Each end is then connected via SS overbraid injection hose to the pump, filter and tank at the rear and to the fuel rail at the front.
Swagelok or Eaton compression fittings are what I'd planned to use.
My question really relates to the size of hose/tubing since my fuel rail appears to be 3/8" OD so therefore the ID will be less.
So I guess 3/8" OD hard line should be fine for the main front to rear run?
