TTVYSS

I have done a search and have seem some info on the various Walbro in-tank fuel pumps. I am about to commence an LS3 installation into an VK Commodore (old Australian car for those who don't know). In terms of fuel supply I did plan on fitting a Walbro 400lph in-tank pump and the trusty Corvette fuel reg/filter. After buying the pump I noted Aeromotive caution against using the this fuel reg with fuel supply exceeding 250lph. My HP output should be around the 460 - 500 mark. Has anyone used this combo and experienced any problems?

thanks in advance...

RLJ676

I am putting in the same combo for my supercharged L92 setup in my 72 Camaro. Tanks Inc sells both as part of their systems and I don't see any warning from them, hoping it is not a problem as I believe plenty use this and vette guys who up the power I don't think swap filters out. Would love to hear for sure.

Project GatTagO

iTrader: (7)

With your HP level I see no reason to run the 400 Walbro pump. A 255 pump will more than do the job. I have one in my GTO (about 500hp) and in my Cougar (about 400hp). Running a bigger pump than is needed will only result in a lot of unused fuel being routed to the tank and also heating up the fuel (both bad).

Andrew

TTVYSS

Thanks and noted. I already bought the pump before doing my research. Oh well I may just have to increase the HP....

thanks for the responses.

1989GTA

The reason I went to the Walbro 400lph fuel pump is that it is a lot quieter than the 255lph pump. I cannot hear the 400 pump running at all. The 255 pump is noisy in comparison. I am also using the Corvette fuel reg/press unit.

Everything is working out just fine in my car.