C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

fuel pump capcity

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Old Dec 8, 2010 | 03:29 PM
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jan-erik's Avatar
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Hi.
I have an 85 slightly moded 4+3 . ported stock heads,manifold and plenum large runners.Tpis coated headers and high flow catback and no cat as we do not have equirements for this year models in Norway.
I use the new Bosch genreration III 24lbs/h injectors and adjustable fuel pressure regulator set to 43psi

Does anybody know how much power the stock fuel pump can manage.
The engine pulls hard to about 5000. Will the fuelpump be a restriction
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Old Dec 8, 2010 | 09:24 PM
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Your stock pump is good up to about 400 HP.
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Old Dec 8, 2010 | 10:37 PM
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John is correct. My tuner suggested I get a 255 gph fuel pump for my 383 in case I did more mods, but my stock pump seemed to handle the close to 400 hp motor with no problems...WW
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