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How many AMPs does the fuel pump need?

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Old

Aug 6, 2003 | 10:53 PM

#1

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Joined: Apr 2003

Posts: 1,781

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From: B'ville, WV

Car: 2002 Formula Firebird

Engine: LS1

Transmission: 4l60e

Axle/Gears: 3.23

How many AMPs does the fuel pump need?

I switched from TBI to carb along time ago but I got around to thinking. I have my relay hotwired to a 15 or 25 amp fuse I cant remember which right now....for those f-body gods how many amps do you think it needs? Im getting a 255lph walbro soon. I dont think the stock 305 TBI fuel pump is up to the challenge anymore.

Old

Aug 7, 2003 | 08:25 AM

#2

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Joined: Aug 1999

Posts: 1,443

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From: College Station, Tex USA

Car: 89rs

Engine: 400Sb

Transmission: Tremec 3550

most are less than 5amps..

some big ones approach 15.. but rarely.

Old

Aug 7, 2003 | 08:56 AM

#3

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Joined: Jul 1999

Posts: 5,183

Likes: 42

From: Oakdale, Ca

Car: 89 IrocZ

Engine: L98-ish

Transmission: 700R4

I'd expect the relay to draw in the milliamp range (rating may be on it).

The relay is what handles the current draw from the fuel pump.

Old

Aug 7, 2003 | 10:48 AM

#4

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Joined: Apr 2003

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From: B'ville, WV

Car: 2002 Formula Firebird

Engine: LS1

Transmission: 4l60e

Axle/Gears: 3.23

So I should be ok where ever I wire it? I think its in a 15 amp fuse now. Been working good for along time so I guess its ok

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