2000 Camaro fuel pump for 600 RWHP na - LS1TECH - Camaro and Firebird Forum Discussion

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2000 Camaro fuel pump for 600 RWHP na

Old 03-14-2018, 12:37 AM
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Default 2000 Camaro fuel pump for 600 RWHP na

Anybody know of an easy fit fuel pump that supports 600 RWHP naturally aspirated, while not cutting up the fuel pump bucket?

I have a plastic LS1 F-body fuel tank in my car with a Racetronix red pump. I think that is a Walbro 255 pump, right? I don't think that pump will support the next engine I am dropping in the car.
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Old 03-14-2018, 01:45 AM
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Or I could run a voltage booster for the pump, I guess. Not sure if the F-body regulator can handle that kind of return flow when engine demand is low.
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Old 03-14-2018, 08:53 AM
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I run a Walbro 255 pump and hotwire kit from Racetronix, and I'm at around 600 rwhp on the 150 shot and it works just fine. If it holds 600 rwhp on nitrous it should hold it n/a I would think
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Old 03-14-2018, 11:32 AM
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You need about 50lb/hr for every hundred HP when N/A and only about 35lb/hr of fuel per hundred with nitrous, so you can get more power with nitrous from the same fuel by a little bit.

The 255lph will support 550HP safely at the flywheel normally. You can push that to 600 if you have over size injectors and tune it for the pressure drop, not the right way to do things. I'm not sure how much the boost a pump gains you, but I know it works so research that before going that way. I'm someone with experience will speak up. I would just fit a 340 or 380lph pump if it was me with a hotwire kit. I've seen a post of someone just doing light mods to the newer buckets to fit a Walbro 450lph pump and that will support about 850 flywheel N/A.
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Old 03-14-2018, 01:19 PM
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I'm about where you are too, although not sure what my motor build will make but it could do 600rwhp. I have the racetronix 255 and will run that through break in and see how the pressure holds at WOT. I've always heard 550rwhp is racetronix's rating but they can push 600 N/A.

But if you're going from a stock pump, I would probably just go straight to the racetronix 340 setup with the C5 fuel filter that WS6store sells. It's really not much more money, from what I've read should be the same level of work as the 255 but gives you factor of safety and/or room to grow a few more hp. I may have to go up to a 340 anyway.
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Old 03-15-2018, 01:16 AM
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Good replies, guys. Thanks.

I talked to Racetronix today. They have a 340 LPH pump, not sold on the website, that will maintain the venturi for the fuel bucket. Although, I'm not sure if he'll sell it to me or not. Knowledgeable guy but a bit difficult to talk with.

Talked to Nasty Performance, too. I have bought stuff from them before and Nate is fantastic to talk with. They have a Lonnie's double pumper that fits in the stock bucket. Second pump would run on a RPM switch, or TPS switch.

I also see that Lingenfelter sells a Bosch 350 LPH pump. I don't know anything about how it fits in the bucket and will call Lingenfelter tomorrow.

Still considering a Boost-A-Pump though. It would mean fewer changes to my car and easier to integrate than a double pump setup. Need to figure out the real differences between the Kenne Bell and the MSD, and which one better serves my needs. I tend to favor ancillary equipment that doesn't need laptops and software because all that stuff goes out of date fairly quickly. Stand-alone electronics is good in this case.

Last edited by QwkTrip; 03-15-2018 at 01:23 AM.
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Old 03-15-2018, 01:55 AM
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Originally Posted by QwkTrip View Post
I talked to Racetronix today. They have a 340 LPH pump, not sold on the website, that will maintain the venturi for the fuel bucket.
Perhaps this is the same thing,

http://www.ws6project.com/user_stor/...oducts_id=8399

Don't need the Hotwire kit though.
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Old 03-15-2018, 02:19 AM
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Hmmm.... seeing some posts where people say the stock pressure regulator gets overwhelmed with the larger 3xx LPH pumps. Maybe a Boost-A-Pump is the right answer, or possibly a small set of dual pumps that work on demand. That way return fuel flow isn't excessive when the engine isn't needing it.
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Old 03-15-2018, 11:11 AM
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Originally Posted by QwkTrip View Post
Hmmm.... seeing some posts where people say the stock pressure regulator gets overwhelmed with the larger 3xx LPH pumps. Maybe a Boost-A-Pump is the right answer, or possibly a small set of dual pumps that work on demand. That way return fuel flow isn't excessive when the engine isn't needing it.
In that link above you'll see at the bottom there's an option to include the C5 fuel filter and regulator kit. Install that it replaces the stock in tank regulator so you can run the larger pump and still keep a reasonable fuel pressure.
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Old 03-15-2018, 11:57 AM
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I don't know on the 340, but with the 450 pump I was idling at 68psi. The in tank one is not the best idea anyways as it's hard to service. Either go with the GM filter/reg or Holley also makes one like that, but the GM one is probably easier with the kit that is now made for our cars.
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Old 03-16-2018, 08:06 AM
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For the amount of money it costs to do 600whp N/A, I'm pretty sure you shouldn't be so worried about having to do something to the fuel tank.
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Old 03-16-2018, 02:07 PM
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It wasn't a good idea when it was new, but it makes mores sense when you build more power?
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