fuel system question...
Thread Starter
Teching In
Joined: May 2004
Posts: 46
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fuel system question... hey guys, on your conversions how are you guys setting up the fuel system, what pumps to regulators, etc...? aslo what kind of mpg are people getting with these conversions?
Last edited by 1971ssLS1; Aug 21, 2004 at 10:06 AM.
Walbro 340 in-tank pump, Aeromotive adjustable fuel pressure regulator mounted in the engine compartment, S&P fuel rail AN-06 adapter, 24mpg highway earlier this summer with lots of loud pedal application.
Im hoping to be over 30 mpg - 2800lb 93 RX7 with a better drag coeficient than a C5.
Since I have to appease the ******* CA smog *****, I will be grafting the camaro intank pump into my RX tank so that the fuel pressure sensor works. (Adjustable FPRs are illegal)
Since I have to appease the ******* CA smog *****, I will be grafting the camaro intank pump into my RX tank so that the fuel pressure sensor works. (Adjustable FPRs are illegal)
Originally Posted by 70 LS1
Walbro 340 255lph inline pump. stock 1999 corvette fuel pressure regulator. Aluminum 3/8" line from the regulator to the engine bay.
25-28 mpg
25-28 mpg
Dunno what I'm getting for mileage but it's better than the carbed 350 was getting before the LS1 arrived.
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TECH Addict
Joined: Oct 2002
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From: Mefis
For a fuel pump we are using a stock 2000 camaro fuel pump sitting in a 5 gallon bucket. 
A brass "tee" connects to high pressure rubber fuel hoses and to the regulator in the stock fuel pump housing.
A swagelok connects the fuel rail to the high pressure hose.
No mpg figures as of yet. We have only had it running in the frame.
A brass "tee" connects to high pressure rubber fuel hoses and to the regulator in the stock fuel pump housing.
A swagelok connects the fuel rail to the high pressure hose.
No mpg figures as of yet. We have only had it running in the frame.
Staging Lane
Joined: Dec 2003
Posts: 90
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From: Phoenix
Carter P4070 boost pump off of tank feediing a one liter external sump (did not want to sump the gas tank) with -6 aluminum hard line. Overflow from sump goes back into the gas tank. 255 LPH Walbro external pump draws from external sump and feeds a Corvette regulator fillter, regulator/filter goes to a stainless Chevy truck EFI filter, then up to the fuel rail. Everything is hardline and AN, except that goofy -5 fuel return off of the Corvette regulator, which is flexable hose.