Fuel System Limitations
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 3,277
Likes: 32
From: Mission Viejo California
Fuel System Limitations
What are the limitations of the stock lines as far as flow or hp is concerned? What about the stock fuel pressure regulator? If I toss a really big fuel pump on there will I have trouble getting the fuel pressure down to stock levels?
Burning Brakes
Joined: Oct 2006
Posts: 834
Likes: 0
i have been told the stock pump will feed about 400hp if you are getting a good burn. as for the lines yes alot I have seen people who have had to T-joint the fuel inlet so that each fule rail was fed equaly since the crossover pipe on the fuel rails is in serries they needed it in parrallel but I think that was 396 supercharged motor puting out about 700+hp
Safety Car
Joined: Nov 2004
Posts: 4,991
Likes: 5
From: The Pines South Jersey
One thing that hasnt been mentioned yet, is the wiring.
The voltage drop on the stock oem wiring is more of a problem then then lines feeding the rails.
Upgrading the wiring from the pump forward will keep the voltage constant, so the pump will flow as rated.
The voltage drop on the stock oem wiring is more of a problem then then lines feeding the rails.
Upgrading the wiring from the pump forward will keep the voltage constant, so the pump will flow as rated.
Thread Starter
Melting Slicks
Joined: Jul 2004
Posts: 3,277
Likes: 32
From: Mission Viejo California
I'm not worried about the stock pump since it's long gone. I'm worried about the limitations of the regulator or the lines. Some cars have limitations at the regulator; if there's too much fuel flow coming through, they won't be able to keep the pressure steady. The reason I ask is because I already have a 255 in tank and I'm thinking of hooking up a big sx external fuel pump (the efi one). I'm going to change this in hopes of around 800+ hp. SC motors take more fuel than nitrous motors so I'm planning on having plenty of flow and huge fuel injectors(60's or 72's). I'm already running low 11's with the stock converter leaving off idle.
Race Director
Joined: Jun 2004
Posts: 13,944
Likes: 705
From: WI
Yeah that'd be a lot of fuel with boost. You could try asking over in the FI/Nitrous section. I ran a search for you there, one post says 700+ HP with stock lines.
Post #2
http://forums.corvetteforum.com/show...ight=fuel+line
Talk about regulators
http://forums.corvetteforum.com/show...ight=fuel+line
Post #2
http://forums.corvetteforum.com/show...ight=fuel+line
Talk about regulators
http://forums.corvetteforum.com/show...ight=fuel+line
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski