Ive searched, stock ls1 fuel rail max hp?
02-20-2014, 11:32 PM
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Ive searched, stock ls1 fuel rail max hp? I have a turbo 6.0. BW S475 through an auto running on 91 and a dual #5nozzle 50/50 meth kit. I should make high 600's rwhp,if not more. My tuner is saying that will not make any more than 550 because I will starve my injectors with my stock ls1 rails. My fuel system is a sumped tank, -10 feed to holley dominator duals, -8 to the holley boost reference regulator, -8 to the stock rails, -6 return. It seems that a lot of people are making plenty of power on the stock rails. I just cannot find any solid info. There are people sayin 1200 hp, then there are some saying no more than 500. Does anyone actually have first hand experience?
02-21-2014, 12:11 AM
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tell your tuner i made 700+rwhp on stock fuel rails and 91. e85 would obviously limit things as well... when i pulled the engine down all pistons were perfect no signs of being lean or detonation anywhere. i believe skinnies made 850 on stock rails... and mine was on stock fuel line and intank regulator. if you have a regulator at the rail even better. that said i would say anywhere between 700-800 wouldnt be a bad place to really start thinking about replacing the rails. not like they are that expensive when you are talking about a 7-8 + hundred horsepower build haha
02-21-2014, 08:00 AM
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At the 900rwhp mark on my stock rails/lines/regulator. 21psi with a s475. FIC1000cc injectors. Twin 10gph meth nozzles using 100%. Pump 93. Im 6speed. Made a pull on 16psi and made 775rwhp. AFRS 10.8-11.0. Video in SIG.
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02-21-2014, 08:38 AM
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I have a turbo 6.0. BW S475 through an auto running on 91 and a dual #5nozzle 50/50 meth kit. I should make high 600's rwhp,if not more. My tuner is saying that will not make any more than 550 because I will starve my injectors with my stock ls1 rails. My fuel system is a sumped tank, -10 feed to holley dominator duals, -8 to the holley boost reference regulator, -8 to the stock rails, -6 return. It seems that a lot of people are making plenty of power on the stock rails. I just cannot find any solid info. There are people sayin 1200 hp, then there are some saying no more than 500. Does anyone actually have first hand experience?
02-21-2014, 03:11 PM
#10
I have a turbo 6.0. BW S475 through an auto running on 91 and a dual #5nozzle 50/50 meth kit. I should make high 600's rwhp,if not more. My tuner is saying that will not make any more than 550 because I will starve my injectors with my stock ls1 rails. My fuel system is a sumped tank, -10 feed to holley dominator duals, -8 to the holley boost reference regulator, -8 to the stock rails, -6 return. It seems that a lot of people are making plenty of power on the stock rails. I just cannot find any solid info. There are people sayin 1200 hp, then there are some saying no more than 500. Does anyone actually have first hand experience?
IMO I would look for a tuner with direct LS turbo experience. Not some goober trying to sell you things you don't need.
I'd post my car but you can't see it as well. This car made 850whp on OEM rails on E85. -6 from regulator to rail.
Last edited by Forcefed86; 02-21-2014 at 03:19 PM.
02-25-2014, 11:40 AM
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Hmm, I see that you guys are "deadheading" the rails. No issues with that? My setups have always located the bypass regulator after the rails have been fed. Do you tune for it in the stock ECU the same as any other manifold referenced fuel system?
I was planning to TIG some fittings on both ends of the rails, with a crossover and plumb it like I always have, but I kinda like this idea. The results of Forcefed's car seems to indicate that it works well.
I was planning to TIG some fittings on both ends of the rails, with a crossover and plumb it like I always have, but I kinda like this idea. The results of Forcefed's car seems to indicate that it works well.
02-25-2014, 11:56 AM
#13
Hmm, I see that you guys are "deadheading" the rails. No issues with that? My setups have always located the bypass regulator after the rails have been fed. Do you tune for it in the stock ECU the same as any other manifold referenced fuel system?
I was planning to TIG some fittings on both ends of the rails, with a crossover and plumb it like I always have, but I kinda like this idea. The results of Forcefed's car seems to indicate that it works well.
I was planning to TIG some fittings on both ends of the rails, with a crossover and plumb it like I always have, but I kinda like this idea. The results of Forcefed's car seems to indicate that it works well.
After the rails is better IMO. But not worth the extra cost and effort in my JY type build. Skinnies (thats his car in the pic above) and a few others have made over 850whp on E85 with the rail dead headed like that.
Not sure the power I was making but I was running 25lbs of boost on my s475 on E85 with mine.
02-27-2014, 01:28 PM
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Sweet. The setup I'd be doing this on is nowhere near a max effort....or even a moderate effort setup. Just a 500-600 whp LS6. Thanks for the info, I might give it a shot.
03-10-2017, 09:00 AM
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Staying Alive.. Looking to stay in the 550-600whp range, turbo LQ4. Planned on using factory rails deadheaded, with factory 3/8 feed line, an aftermarket regulator and factory return line. This is going in an LT1 car so the lines are the easy part. Now what fuel pump setup is recommended? Single Aeromotive 340?
