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5/16 fuel line on mild 440 #311372 05/07/09 11:26 PM 05/07/09 11:26 PM
Joined: Jan 2008 Posts: 350 CT USA N Nick Mineau OP enthusiast
Nick Mineau OP enthusiast N Joined: Jan 2008 Posts: 350 CT USA	hi im currently running a 5/16 fuel line on my 440. the engine is probly makeing 400 horsepower at the crank and doesnt have many mods over stock. is this going to feed the beast. anyone have problems with this size line on a mild bb 440? thank you all

Re: 5/16 fuel line on mild 440 [Re: Nick Mineau] #311373 05/07/09 11:42 PM 05/07/09 11:42 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	The A12 cars (69 440-6) only had a 5/16 line, no problem...

Re: 5/16 fuel line on mild 440 [Re: Nick Mineau] #311374 05/07/09 11:47 PM 05/07/09 11:47 PM
Joined: Jul 2008 Posts: 403 NE Ohio 7 71 FJ6 Charger mopar
71 FJ6 Charger mopar 7 Joined: Jul 2008 Posts: 403 NE Ohio	Try it,if not put a Carter elec. fuel pump on it to push it through. Last edited by 71_440SuperBee; 05/07/09 11:48 PM. '71 383HP FJ6 Charger SE

Re: 5/16 fuel line on mild 440 [Re: 71 FJ6 Charger] #311375 05/07/09 11:49 PM 05/07/09 11:49 PM
Joined: Jan 2008 Posts: 350 CT USA N Nick Mineau OP enthusiast
Nick Mineau OP enthusiast N Joined: Jan 2008 Posts: 350 CT USA	i have a 750 eddy with a holley mechancial pump. thanks for the info.

Re: 5/16 fuel line on mild 440 [Re: 71 FJ6 Charger] #311376 05/07/09 11:50 PM 05/07/09 11:50 PM
Joined: Mar 2005 Posts: 7,052 Madera, CA. MowP4rsn master
MowP4rsn master Joined: Mar 2005 Posts: 7,052 Madera, CA.	It works just fine on my '67 300, from the factory.

Re: 5/16 fuel line on mild 440 [Re: MowP4rsn] #311377 05/07/09 11:53 PM 05/07/09 11:53 PM
Joined: Jan 2008 Posts: 350 CT USA N Nick Mineau OP enthusiast
Nick Mineau OP enthusiast N Joined: Jan 2008 Posts: 350 CT USA	im leaning toards the 5/16 because i already made it. so what did they use on the 6 pack because i probaly am makeing the same power a stock 440 6 pack. what about factory on the 4 barrel hp engine?

Re: 5/16 fuel line on mild 440 [Re: Nick Mineau] #311378 05/08/09 12:17 AM 05/08/09 12:17 AM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Like I stated earlier 69 440 Sixpack cars had 5/16 as did 69 & earlier 440-4 barrel cars.. 426 Hemi got 3/8 & starting in 70 440-4 barrel & 440-6 got 3/8.. So 5/16 obviously will work but 3/8 is better if your really gonna try to get max power out of that 440...

Re: 5/16 fuel line on mild 440 [Re: 1_WILD_RT] #311379 05/08/09 12:24 AM 05/08/09 12:24 AM
Joined: Jan 2008 Posts: 350 CT USA N Nick Mineau OP enthusiast
Nick Mineau OP enthusiast N Joined: Jan 2008 Posts: 350 CT USA	thanks for the history. that is exactly what i was looking for Last edited by Nick Mineau; 05/08/09 12:25 AM.

Re: 5/16 fuel line on mild 440 [Re: Nick Mineau] #311380 05/08/09 03:11 AM 05/08/09 03:11 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	My sons .030 over 400 Dart still has the factory 5/16 line and has run 11.40's at 117 with no problems. Should be fine. Ron Last edited by 383man; 05/08/09 03:11 AM.

Re: 5/16 fuel line on mild 440 [Re: Nick Mineau] #311381 05/08/09 03:20 AM 05/08/09 03:20 AM
Joined: Jul 2008 Posts: 30,493 Florida STAYcation dOc … The village idiot's idiot
dOc … The village idiot's idiot Joined: Jul 2008 Posts: 30,493 Florida STAYcation	There are 10 second cars using 5/16 line. NO problem.

Re: 5/16 fuel line on mild 440 [Re: dOc …] #311382 05/08/09 08:04 AM 05/08/09 08:04 AM
Joined: Apr 2005 Posts: 4,923 new berlin wisconsin M Mr T2U master
Mr T2U master M Joined: Apr 2005 Posts: 4,923 new berlin wisconsin	i have a buddy who has a 07 mustang that makes 800hp at the rear wheels. he has the stock 5/16" fuel lines and pump. then again newer mustangs have high pressure pumps. his best time is a 10.2 @ 139 mph perception is 90% of reality

Re: 5/16 fuel line on mild 440 [Re: 1_WILD_RT] #311383 05/08/09 08:36 AM 05/08/09 08:36 AM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	Quote: The A12 cars (69 440-6) only had a 5/16 line, no problem... no problems...seem 440-6 cars run 11.80's w/ them. [IMG]http://i66.tinypic.com/pui5j.jpg[/IMG] Coming soon!!!!

Re: 5/16 fuel line on mild 440 [Re: Nick Mineau] #311384 05/08/09 09:02 AM 05/08/09 09:02 AM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: hi im currently running a 5/16 fuel line on my 440. the engine is probly makeing 400 horsepower at the crank and doesnt have many mods over stock. is this going to feed the beast. anyone have problems with this size line on a mild bb 440? thank you all I would suggest you ask this question through the tech lines at Holley and BG and see what they recommend - - and let this forum no the results. Fastest 300

Re: 5/16 fuel line on mild 440 [Re: Crizila] #311385 05/08/09 09:53 AM 05/08/09 09:53 AM
Joined: Jan 2003 Posts: 4,288 Danville, NH M Mopar_Mike master
Mopar_Mike master M Joined: Jan 2003 Posts: 4,288 Danville, NH	I know my 67 B-body 440 cars have the 3/8 fuel pump over the non BB cars 5/16th pump. I have never measured the fuel line, but I would guess it is 3/8 not 5/16.. However, like everyone has said here before me, you will have no problems running 5/16 line. RS23L7 4-Speed

Re: 5/16 fuel line on mild 440 [Re: Mopar_Mike] #311386 05/08/09 10:24 AM 05/08/09 10:24 AM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	if you need more fuel, you could run an electric pump and get more pressure, then step it down with a regulator at the carb, using 3/8 from the reg to the carb, and you should be ok that way too. Photobucket sucks

Re: 5/16 fuel line on mild 440 [Re: Nick Mineau] #311387 05/09/09 08:27 AM 05/09/09 08:27 AM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	Quote: im leaning toards the 5/16 because i already made it. so what did they use on the 6 pack because i probaly am makeing the same power a stock 440 6 pack. what about factory on the 4 barrel hp engine? Hope you made all good mandrel bends there and don't have any dings, etc in your line. Any slight errors and guess what - you are now looking at a restriction in the neighborhood of 1/4". Don't know any 10 second cars running a 1/4" fuel line. Fastest 300

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