LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Injector size?

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Old Aug 30, 2005 | 04:33 PM
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cmerc's Avatar
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Default Injector size?

This is a list of the mods done to my engine by the original owner, Note that the injectors are 27LB; I am running approx 65 psi fuel pressure and am wondering if these injectors are big enough. If not what size should I consider, I am suspicious that at least 2 of them are failing and am considering larger ones if the experts think these are too small, also if I went to larger injectors would I need to reprogram the PCM for the new injectors?

383 stroker 550hp dynoed /AFR-210 Heads Ported w/210-160 valves/Comp Cam 1.550 Springs Titamium Retainers 10 degree locks/LT4 intake Port Matched to heads/Adjustable Fuel Regulator/Callies 4340 Knife Edged
TPIS Solid Roller With Comp Cam Rollers/Cloyes Roller Chain/Titan Oil Pump - Adj. Oil pressure next to dry sump
Billet Fabricated Aluminum Oil Pan 7qts.
Tall Billet fabricated aluminum valve covers w/spring oilers
30 over JE Pistons 10.3 with 6" forged alum. Eagle Rods
ARP head studs Bottom end bolts and Deck plugs
Balanced & Clearnced Bore & Hone with deck plates Align honed/EGR block off - no air pump/Lingenfelter 58mm throttle body/Granatelli Mass air flow sensors - G2 high flow rubber bellows/27lb. Injectors/In Tank Fuel Pump - Handles 500hp/TCI Damper
Meziere elec. Water pump 160 degree thermostat
Be Cool Alum Radiator/Performance Dist. 9mm Live wires
MSD 6AL - MSD Coil - More Performance opti-spark
S/P Steel Billet Flywheel/Centerforce Clutch
Hooker Longtube Headers W/Ypipe & jet coat
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Old Aug 30, 2005 | 04:57 PM
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Black97's Avatar
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If 550 is flywheel hp you should get 42lb .. Click to the link and see what you have to do.. The numbers are flywheel hp not rear wheel hp..

http://paradox.shacknet.nu/dave88lx/.../injectors.htm
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