Walbro 255 vs Walbro 400
02-20-2013, 08:46 AM
#1
Walbro 255 vs Walbro 400 I'm replacing the stock tank in my '67 Camaro with an EFI tank and need to pick an intank pump. The Camaro should be making around 450+rwhp. The Walbro 255 says it's good to 600hp (crank/wheel?), while the Walbro 400 says it's good for 500-900hp(crank/wheel?) for about $60 more.
I'd rather not have to replace the pump in a year or two if I decide I need to make more power. Are there any issues with running the bigger pump? Is it worth while? I'll be using a corvette style bypass regulator with this setup. Thanks.
I'd rather not have to replace the pump in a year or two if I decide I need to make more power. Are there any issues with running the bigger pump? Is it worth while? I'll be using a corvette style bypass regulator with this setup. Thanks.
02-24-2013, 07:29 PM
#2
I contacted Tanks Inc. and asked them:
"Would the Walbro 400 (GPA-6) be overkill for a 450-475rwhp engine, or is the 255 (GPA-4) more appropriate. I'll be running a corvette style bypass regulator with it."
Their reply:
"Would the Walbro 400 (GPA-6) be overkill for a 450-475rwhp engine, or is the 255 (GPA-4) more appropriate. I'll be running a corvette style bypass regulator with it."
Their reply:
We would recommend the GPA-4 pump. It will be enough fuel for your set up and any unused fuel will be returned to the tank.
