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1964 Chevrolet Chevelle Malibu 4 door
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Discussion Starter · #1 ·
Looks like I'm getting ready to swap out another Walbro 255 pump. It's gotten extremely noisy and I'm noticing my afr is starting to rise in the upper rpms. :confused:

It's an in-tank pump in Tanks Inc setup w/ baffled sump, so the pump stays submerged and I don't run it dry.

I don't think it's a chinese knockoff as it came straight from Tanks.

Thinking about trying DeatschWerks pump, wondering if anyone has tried them or know of a better alternative?
 

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1971 Chevelle. Carb鈥檇 6.0 LS Th350 3.90 12 Bolt. 1972 Greenbrier Wagon 489, 700r4 3,73 12 bolt
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3,711 Posts
I switched to the new style Tanks Inc. The one with the angled front corners and new baffling. With this tank it is able to run the Walbro 450. MUCH quieter than the 255鈥.
 

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I'm running a factory GM pump for a 2010 Camaro SS in a Rick's tank.
 

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Walbro 450LPH
Tanks inc tank
 

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Hotwire,

You didn't mention what power level you're at. I've had pretty good luck with the Walbro 'Hellcat' pump - listed as 525 LPH. It's an OEM in tank pump for 700+ Hp EFI engines. There's a version with the internal check valve, and another version without the check valve. Be careful about buying it from a reputable source - I've heard there are cheaper Chinese knock-offs of this pump. Good luck!

Dave
 

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1969 Chevelle Malibu, 496 BBC, Muncie M-20
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I switched to the new style Tanks Inc. The one with the angled front corners and new baffling. With this tank it is able to run the Walbro 450. MUCH quieter than the 255鈥.
I just ordered one too...smaller version of this for carb application, 700 HP range. Hope this holds up because I'm out of tired of trying to get parts! Almost everything backordered.
 

Premium Member
1971 Chevelle. Carb鈥檇 6.0 LS Th350 3.90 12 Bolt. 1972 Greenbrier Wagon 489, 700r4 3,73 12 bolt
Joined
3,711 Posts
I just ordered one too...smaller version of this for carb application, 700 HP range. Hope this holds up because I'm out of tired of trying to get parts! Almost everything backordered.
I am running a carb too...and a nitrous kit. Figured I would just get the biggest one. I wish they would make a setup that would use a -8 line.
 

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1964 Chevrolet Chevelle Malibu 4 door
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2,701 Posts
Discussion Starter · #11 ·
Thanks guys, this thing maybe has 400hp at the crank? It's really just a cammed stock 9.2:1? 364cuin engine.

Anything over 255lph I have now would be a waste and might overpower the corvette filter/regulator setup I have now unfortunately.

I think I'm going to try a Deatshwerks pump. Haven't seen anyone w/ bad experiences from them, just want to get away from walbro for a bit as I really haven't had good luck with them. Didn't know if anyone had experience with them.

 

Premium Member
1971 Chevelle. Carb鈥檇 6.0 LS Th350 3.90 12 Bolt. 1972 Greenbrier Wagon 489, 700r4 3,73 12 bolt
Joined
3,711 Posts
Thanks guys, this thing maybe has 400hp at the crank? It's really just a cammed stock 9.2:1? 364cuin engine.

Anything over 255lph I have now would be a waste and might overpower the corvette filter/regulator setup I have now unfortunately.

I think I'm going to try a Deatshwerks pump. Haven't seen anyone w/ bad experiences from them, just want to get away from walbro for a bit as I really haven't had good luck with them. Didn't know if anyone had experience with them.

I never had a problem with the 255, it was a bit noisy. Had an issue with the first tank and starvation with the fuel too low. Since I was swapping the tanks anyway, figured I would go ahead and get the biggest pump they make. It is really quiet!
Didn鈥檛 really have to do anything really crazy adjustment wise to the regulator that I remember.
Just have to make sure you are getting enough voltage to the pump.
 
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