Fuel pump - Walbro 255?
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From: RONKONKOMA NY
Fuel pump - Walbro 255?
Does anybody know what the stock fuel pump on a 96 LT4 flows? I have a lean condition at high rpm and need to upgrade the stock pump. The motor has been stroked to 396 ci and is running 30# injectors. Is a walbro 255 a good choice? Does it flow at a much higher rate than the stock pump? Any alternative suggestions? Thanks,
Pete
Pete
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From: Tampa Florida
I don't recall nor have the flow numbers (surely a Google will get them), but I run one in my 381 (450 HP) and no issues with either 31.6's or 36 injectors.
My understanding is it is plenty for pretty much any NA application...
The kit from Racetronix was a bolt in and still working after 22,000 miles.
My understanding is it is plenty for pretty much any NA application...
The kit from Racetronix was a bolt in and still working after 22,000 miles.
Drifting
Joined: Oct 2006
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From: Citrus Heights California
I don't recall nor have the flow numbers (surely a Google will get them), but I run one in my 381 (450 HP) and no issues with either 31.6's or 36 injectors.
My understanding is it is plenty for pretty much any NA application...
The kit from Racetronix was a bolt in and still working after 22,000 miles.
My understanding is it is plenty for pretty much any NA application...
The kit from Racetronix was a bolt in and still working after 22,000 miles.
A 255 Walbro should work fine. It's a very good pump and it flows at 255 LPH. I think that's good for over 500HP.
Last edited by Kool88vette; Jun 15, 2008 at 09:42 AM.
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From: RONKONKOMA NY
Thanks for your responses. Does anyone know how many LPH the stock pump flows? I can't seem to find this info anywhere. Just want to make sure the Walbro will be able to supply sufficiently more than the stock pump.
Pete
Pete
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From: Sebastian Florida
St. Jude Donor '06
Does anybody know what the stock fuel pump on a 96 LT4 flows? I have a lean condition at high rpm and need to upgrade the stock pump. The motor has been stroked to 396 ci and is running 30# injectors. Is a walbro 255 a good choice? Does it flow at a much higher rate than the stock pump? Any alternative suggestions? Thanks,
Pete
Pete
You may beed to bump the FP up a couple of PSI, have you tune the ECM?
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From: RONKONKOMA NY
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From: RONKONKOMA NY
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From: RONKONKOMA NY
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Joined: Aug 2002
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From: RONKONKOMA NY
Racetronix Fuel Pump w/ Walbro GSS340M 255L/Hr pump + Racetronix custom installation kit, 1990-1996 L98/LT1 C4 Corvette
Should be here in a day or two.
-Pete
