Injector/fuel pump question
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Joined: Oct 2002
Posts: 133
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From: Minnesota
Car: 88IROC Vert
Engine: ZZ383
Transmission: 700R4
Injector/fuel pump question
I have a ZZ383 in an 88 IROC that runs great. Talented local tuner and Holly Commander have the EFI working fabulous. During a final road tune the 30# injectors were at 115% of duty cycle with the stock fuel pump. With that said, IF i go to bigger injectors (I'm thinking 36#-42#), would I need to upgrade to a higher capacity fuel pump to go along with the injectors? Thanks
Joined: Nov 2008
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From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
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From: NY
Car: 00 SSEi / 94 C4
Engine: 231 / 383
Transmission: 4T65E / ZF 6sp
Axle/Gears: 2.93 / Dana 44 3:45
Re: Injector/fuel pump question
I would Eliminate the tiny FP coupler. Install 3/8 aluminum line flare and install a union coupler in it's place. Flare the other end. install a sockfilter. Upgrade to a external AEM fuel pump & lines, to -AN fittings.
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