will it feed 400 horsepower?
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Junior Member
Joined: Oct 2004
Posts: 61
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From: Richmond,VA
Car: 1988 Camaro SC
Engine: 383 Stroker
Transmission: TH-350
will it feed 400 horsepower?
Im puttin a carbed 383 stroker in my 88 camaro. My question is will the stock (In-tank) fuel pump supply the needs of a 400 horsepower motor? I will be running the Mallory three port return style pressure regulator. I will be running a Holley 750 double pump carb. THANKS
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
An '88 Sports Coupe would be TBI LO3.
It will probably feed it if it is in good operating condition.
It will probably feed it if it is in good operating condition.
Supreme Member
Joined: Sep 1999
Posts: 7,072
Likes: 13
From: Philly, PA
My stock TBI pump is feeding about 320-340HP just fine. Since carbs run at about 1/2 the fuel pressure of a TBI engine it takes a lot of load off the fuel pump and it can move quite a bit more volume than it could in it's original EFI application.
Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Originally posted by five7kid
An '88 Sports Coupe would be TBI LO3.
An '88 Sports Coupe would be TBI LO3.
Supreme Member
Joined: Jul 1999
Posts: 2,756
Likes: 10
From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Holleys need to be runa about 7psi constant - if your pump can't keep up, the pressure will drop. You can add an in-line booster pump to help if needed.
Thread Starter
Junior Member
Joined: Oct 2004
Posts: 61
Likes: 0
From: Richmond,VA
Car: 1988 Camaro SC
Engine: 383 Stroker
Transmission: TH-350
The car didnt have a motor in it when i bought it but I checked the VIN# and it says that it had a 5.0 305ci motor. So it should work then right???
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Joined: Mar 2000
Posts: 43,187
Likes: 45
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
No guarantees on the condition of the pump. That's a real crapshoot.
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