What type of fuel system does the LS-1,2,6 engines have? Is it return or return-less. I never hear f-body guys complaining about changing fuel pumps.
Oh yeah, what type does the LT-1 have too?

 

Welcome to the Board. Most all fuel injected engines for over 15 years now have a fuel pump in the fuel tank and a return to the tank. It keeps fuel pressure at the fuel rail to the fuel injectors at a set pressure with the help of a fuel pressure regulator. The rest of the fuel that is not used runs back to the tank. I just changed out my '95 Z28 fuel pump after 125k miles. They are reliable, but more of a pain to change than the old style carberator versions. Later>>>>>>>>>>>>>>>>

 

LS1's have a return-less fuel system. That's why there are no adjustable fuel pressure regulators available for our cars. You need software (like EFI Live) to adjust fuel settings for LSx cars.

 

1997 LS1's have a return style, 1998 and newer LS1's have return-less style system.

 

Thanks for the help