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: 13,961
Likes: 707
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
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski