LS1 fuel pressure
05-24-2007, 10:47 AM
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LS1 fuel pressure I'm installing an LS1 in my 94 Z. I know the LS1 f-bodys had the fuel pressure reg in the tank. And I know that regular fuel pressure is 60psi. Does the fuel pressure remain 60psi at all times, or is it regulated by a vacum source from the engine like most other cars.
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05-24-2007, 05:50 PM
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You need an electric pump like an MSD 2225 (about $90.00), which pumps to a '99 Corvette Fuel Filter/regulator (NAPA FIL3737). The filter/regulator fuel output then goes to a one-line fuel rail at 55-60psi. Excess fuel pumped by the MSD returns to tank via third line on FIL3737. The pump / filter/regulator keeps the fuel rail at the required pressure. No vacuum regulation is used. The little doohickey on the fuel rail is a pulse damper.
Steve & Garret 1/2 way done with an LS1 into an '86 BMW E30
Steve & Garret 1/2 way done with an LS1 into an '86 BMW E30
05-24-2007, 09:07 PM
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Thats prety much what I was planning on doing (except I'm using the LT1 pump for now), I knew the Vette system was 58psi all the time but didn't know if the F-body system was the same.
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