View Full Version : Y block on fuel lines or not

04-19-2007, 09:47 AM
If I just run the fuel line into one of my rails and then run a crossover to the other and then a line out of it to the fuel regulator is that any different then running a Y-block then a line to each rail and then two lines to the regulator?

04-19-2007, 01:41 PM
Do you have to run a return style fuel system? I'm going to dead head my system.

69 L88 Camaro
04-19-2007, 05:28 PM
Can you give a little more info? Engine, pump. injector size? Batch fire or sequential?

04-19-2007, 08:13 PM
SBC, 55# injectors, sequential, 12 psi of boost, SX fuel pump, 650 hp, will be running a return line

04-20-2007, 06:56 AM
I'd go with the Y and feed each fuel rail separately, in parallel, the way Aeromotive recommends. Especially if you have a big fuel pump. I plumbed it that way in a twin turbo engined car I had using the same pump as you and never had a problem.

04-20-2007, 07:39 AM
This car (http://www.lateral-g.org/gallery/main.php?g2_itemId=89) has a dead head system, made 814rwhp. :bow:

04-20-2007, 09:38 AM
This car (http://www.lateral-g.org/gallery/main.php?g2_itemId=89) has a dead head system, made 814rwhp. :bow:

actually made more than that, but that idiot has no idea what he's doing! :D I've always preferred to Y the lines going into the two rails equally, versus running one side in , crossing over, and feeding the second rail.


04-21-2007, 09:10 AM
run a Y .
helps keep fresh fuel and even line pressure on both sides.

i run a Y on my system


69 L88 Camaro
04-23-2007, 03:24 PM
I would recomend using a Y to feed the back of the rails coming out of the front into a T style EFI style regulator, returning to the tank. the large injectors and pump will contribute to hydraulic issues that you wouldn't see with a smaller system. IMHO.