how many HP is dual walbro's good for? - LS1TECH

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how many HP is dual walbro's good for?

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Old 03-01-2006, 05:38 PM   #1
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Default how many HP is dual walbro's good for?

hi im wondering how much power a dual walbro 255 setup is good any one know?
its in a turbo car.
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Old 03-01-2006, 07:41 PM   #2
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1 trillion dollars....ahem....ive seen guys make >700rwhp.how much u looking to make?
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Old 03-01-2006, 08:01 PM   #3
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We've brought them to just under 1000rwhp on a turbo LS1 with the stock fuel line and filter.
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Old 03-01-2006, 08:12 PM   #4
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with stock fuel line !??!!
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Old 03-01-2006, 08:18 PM   #5
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Quote:
Originally Posted by INTMD8
We've brought them to just under 1000rwhp on a turbo LS1 with the stock fuel line and filter.
Straight with no additive like Meth?
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Old 03-01-2006, 09:03 PM   #6
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Be careful on the psi vs hp rating. If you boost reference a turbo car with a base fuel pressure of 58psi....then add 20 lbs of boost...the flow rate tumbles for two Walbros at 78psi.Less than 600lbs/hr for two Walbros over 78psi vs 740lbs/hr for two 044 Bosch pumps at the same pressure. Two Walbros at 50psi are almost good for 800lbs/hr.
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Old 03-01-2006, 09:09 PM   #7
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Quote:
Originally Posted by onfire
Be careful on the psi vs hp rating. If you boost reference a turbo car with a base fuel pressure of 58psi....then add 20 lbs of boost...the flow rate tumbles for two Walbros at 78psi.Less than 600lbs/hr for two Walbros over 78psi vs 740lbs/hr for two 044 Bosch pumps at the same pressure. Two Walbros at 50psi are almost good for 800lbs/hr.
Does the same theory hold true for SC cars? Say an F1 with 2 intank 340 Walbros? Trying to achieve say...850RWHP.
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Old 03-01-2006, 09:18 PM   #8
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Quote:
Originally Posted by DJ's99SS
Does the same theory hold true for SC cars? Say an F1 with 2 intank 340 Walbros? Trying to achieve say...850RWHP.

Yes it does.
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Old 03-01-2006, 09:28 PM   #9
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Yes, gasoline only. No methanol, I don't use it on any of our cars.

Dual walbros, stock feed line and filter. Upgraded rails, adjustable FPR (mounted up front), stock evap line used as return.
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Old 03-01-2006, 09:28 PM
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