Originally Posted by Smitty275

There's no way on God's Green Earth I'd try to run 650hp off a Holley Blue. It will NOT supply what you need for that motor. Go with an Aeromotive A-1000 and matching return style regulator. Run -10 lines from tank to pump to regulator and return. -10 or -8 to the carb. Never use the rated bare minimum for your fuel supply. I've seen too many customers bring me engines that were damaged from running lean with a Holley Blue. I've shown a lot of people that were upset with how their engine performed after it had been dynoed that their fuel system wasn't up to snuff. Got a pump and lines capable of delivering the fuel installed and was a complete different animal. DON'T SKIMP on your fuel system.

Originally Posted by Zole

Ok Smitty so you are telling me that the A-1000 is the only pump that can step up to the chalenge and it is the best buy...Is there a mechanical pump that can do the job properly.

Originally Posted by Smitty275

Weldon has an equivalent to the A1000. Probably a few others. Holley does make a mechanical that's supposed to support that kind of power. But I've never used it. So I can't vouch for it. I will say, if I can find one I'll be giving it a shot next spring.

Originally Posted by Zole

Is there a mechanical pump that can do the job properly.