AN Fitting question - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

fab410 · 06-06-2024, 09:29 PM

I have a bad crossover line for my fuel rails. I assumed the crossover line used a -6an fitting due to the fact that an 11/16 wrench fits when removing from the fuel rail. I ordered a replacement -6an hose and the an fitting (and hose) is bigger and doesnt fit the 11/16 wrench. I want to make sure it was an error on the senders end sending the wrong part vs me measuring the an fitting incorrectly.

The image attached is my old hose that i need a replacement for and as you can see it uses an 11/16 wrench.

SlowLS1 · 06-07-2024, 07:58 AM

Normally a -6an fitting is 11/16. Looks like the new line might be -8an, which would be 7/8.

Looks like the wrong line was sent to you imo.

CamaroCracka · 06-07-2024, 09:44 AM

I concur

gtstorey · 06-07-2024, 10:12 AM

Is the part that fits inside of the hose a different size? Wrench size might typically be a size, but I don't know that it is standard.

CamaroCracka · 06-09-2024, 11:30 AM

Different manufacturers make them differently, but 6AN is for 3/8 ID hose, 8AN is for half inch. You won't necessarily be able to use parts of an Earls fitting with a Russell fitting, but both a 6an Earls and Russell fittings should fit a 6an hose. If the hose is PTFE lined, you will need a specific type of fitting for PTFE lined hose. All the manufacturers make fittings for both types, you just need the fitting that corresponds to the hose you are using.

stevieturbo · 06-30-2024, 07:53 AM

As above, there is no standard for sizing really.

Different manufacturers just do different things, in terms of spanner size, hose size, fitting design etc etc etc.
Hence why it's never recommended to use a mix of fittings/hose brands

The only common thing really, should be the AN thread and flare.

Also, I would never recommend using any rubber type hose with an outer covering. They tend to fail far too often, even more so that stainless overbraid shit.

PTFE only.

Do the fittings on your new hose, not screw onto the fitting at the rail ?

06-06-2024, 09:29 PM	#1
fab410 @fabSSbuild on IG Drives: 2012 Twin Turbo Super Sport Join Date: Aug 2011 Location: Arlington, VA Posts: 866 View My Garage	AN Fitting question I have a bad crossover line for my fuel rails. I assumed the crossover line used a -6an fitting due to the fact that an 11/16 wrench fits when removing from the fuel rail. I ordered a replacement -6an hose and the an fitting (and hose) is bigger and doesnt fit the 11/16 wrench. I want to make sure it was an error on the senders end sending the wrong part vs me measuring the an fitting incorrectly. The image attached is my old hose that i need a replacement for and as you can see it uses an 11/16 wrench. Attached Images __________________ AGP Twin Turbo, FAST lsxR manifold, ID850's, Squash Return Style Fuel System, ZL1 Bumper/Side Skirts/Hood/Carbon Insert, Havoc Rear Diffuser, PFADT Coilovers/Sway Bars/Adj. Tie Rods/Solid Subframe Bushings/Trailing Arms, Eboost2, SW Retro Chambered 3" Catback, R1 Concept Drilled/Slotted Rotors, 360 Forged Straight 5's, Matte Metallic Purple Wrap, Anvil Carbon Spoiler, Full AAC Lighting, etc

06-07-2024, 07:58 AM	#2
SlowLS1 Drives: 2010 Camaro SS , 2011 Colorado LS1 Join Date: Jan 2022 Location: Greenville, SC Posts: 1,216	Normally a -6an fitting is 11/16. Looks like the new line might be -8an, which would be 7/8. Looks like the wrong line was sent to you imo. __________________

06-07-2024, 09:44 AM	#3
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 3,041	I concur __________________ 2010 SS - Kind of an On3 kit, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1 brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. Gen6 ZL1 brakes.

06-09-2024, 11:30 AM	#5
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 3,041	Different manufacturers make them differently, but 6AN is for 3/8 ID hose, 8AN is for half inch. You won't necessarily be able to use parts of an Earls fitting with a Russell fitting, but both a 6an Earls and Russell fittings should fit a 6an hose. If the hose is PTFE lined, you will need a specific type of fitting for PTFE lined hose. All the manufacturers make fittings for both types, you just need the fitting that corresponds to the hose you are using. __________________ 2010 SS - Kind of an On3 kit, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1 brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. Gen6 ZL1 brakes.

06-07-2024, 10:12 AM	#4
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,450	Is the part that fits inside of the hose a different size? Wrench size might typically be a size, but I don't know that it is standard.

06-30-2024, 07:53 AM	#6
stevieturbo Drives: it changes Join Date: Nov 2010 Location: Norn Iron Posts: 1,128	As above, there is no standard for sizing really. Different manufacturers just do different things, in terms of spanner size, hose size, fitting design etc etc etc. Hence why it's never recommended to use a mix of fittings/hose brands The only common thing really, should be the AN thread and flare. Also, I would never recommend using any rubber type hose with an outer covering. They tend to fail far too often, even more so that stainless overbraid shit. PTFE only. Do the fittings on your new hose, not screw onto the fitting at the rail ?