Skip to main content
Topic: fuel rail and line question (Read 1711 times) previous topic - next topic

fuel rail and line question

how much horsepower can stock 88 fuel rails handle? i dont want the rails starving my engine if thier restrictive. and also when is it usually a good idea to switch from stock fuel lines to the thicker AN style hoses? again, i dont want my engine starvin but i also dont want to spend money on unnesesary parts either.

if it helps, 255 lph pump, 36 lb injectors, and the engine should be good for 450 hp. you think stock will cut it or no?
1988 Thunderbird sport
2004 Ford F150 Lariat
2008  Chevrolet Cobalt Sport
2007 Suzuki DR-Z400S dual sport/Supermoto
1988 Thunderbird LX - sold
1988 Mercury Cougar XR-7 with GST kit - gone

fuel rail and line question

Reply #1
your line inside diameter should not be less than the diameter of the output nipple on the fuel pump.

have you tested that pump to see if it delivers a 2L bottle of gas in less than 30sec?

fuel rail and line question

Reply #2
I believe the sn-95 5.0's had slightly larger fuel rails. I think the 91-93 cougar/bird did too.
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com

fuel rail and line question

Reply #3
I'm sure you will be fine. My old Tbird went mid 11's on all the stock lines and rails. If you have an A/F gauge, you can keep an eye on that. If money is no object, a nice fuel system is always good insurance.

fuel rail and line question

Reply #4
You'll be fine. You'll max out your injectors before you'd max out your rails.
It's Gumby's fault.

fuel rail and line question

Reply #5
sweet. thanks guys. the further i get on this thing the more little odd ball questions like this im runnin into. just wanted to be sure.
1988 Thunderbird sport
2004 Ford F150 Lariat
2008  Chevrolet Cobalt Sport
2007 Suzuki DR-Z400S dual sport/Supermoto
1988 Thunderbird LX - sold
1988 Mercury Cougar XR-7 with GST kit - gone

fuel rail and line question

Reply #6
What size fuel lines you running from the tank?
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

fuel rail and line question

Reply #7
haha, good question. uh...any suggestions? lol
1988 Thunderbird sport
2004 Ford F150 Lariat
2008  Chevrolet Cobalt Sport
2007 Suzuki DR-Z400S dual sport/Supermoto
1988 Thunderbird LX - sold
1988 Mercury Cougar XR-7 with GST kit - gone

fuel rail and line question

Reply #8
1/8" bigger than stock maybe.....Perhaps time for-AN fittings on the feed side....WHat's the I.D of the stock lines?
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

 

fuel rail and line question

Reply #9
Stock lines are 3/8" OD, 5/16" ID.
11.96 @ 118 MPH old 306 KB; 428W coming soon.