Limits of factory fuel rail

[Boostedhoopty]

Is it the volume of the rail itself that is the issue or is it just the 5/16" hose fittings? I would like to have enough fuel flow to support 800+ hp on e85. I'm not at all against buying an aftermarket rail if necessary, but I was curious if anybody had welded some fittings on a factory rail and had good results

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[chikinhed]

I have an OBD1 fuel rail that I’ve modified to -6 fittings. It’s been fine so far through 700+ whp.

[pbonsalb]

I would say no for E85 and 800 rwhp. No for the stock lines as well.

[avee]

ive got a used rally road rail iwont be needing pm me if your interested

[Boostedhoopty]

I would say no for E85 and 800 rwhp. No for the stock lines as well.

I have a -10 feed and -8 return to go on the car with a fuel lab prodigy pump and aeromotive regulator so the rest of the system is covered. My goal is really only low 700's for now but I just wanted to give myself room in the future because we all know how that works

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[Boostedhoopty]

I have an OBD1 fuel rail that I’ve modified to -6 fittings. It’s been fine so far through 700+ whp.

Do you happen to have any pics? That was on ethanol?

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[chikinhed]

I’m on pump gas. There isn’t enough e85 up here for me to make the switch.