need advice on new injecters

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May 8, 2010 | 01:34 PM

kellycd410

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need advice on new injecters

Im running my new 383 stroker with st 2 ls6 heads and i changed to the ls6 intake and whatever sizestock ls6 intake injectors is what im running now,i think they are 28lbs , my car has been tuned however i did i data log yesterday and my duty cycle on my injecters spiked to 128 (6100 rpms) i obviously need bigger injectors, what size should i run to maintain the best performance and fuel economy as well, and is a new fuel pump/fuel rails also going to be needed? please help thanks

May 10, 2010 | 01:30 AM

LS1-450

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42#ers w/ PCM injector setting mods required + Walbro 255 lph fuel pump. Stock fuel rail is OK.

May 10, 2010 | 02:44 AM

Squirts11

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From: OKC, OK

42s should be fine. Make sure you don't drive around with them installed unless the PCM has been calibrated, otherwise you could wash the cylinders with excess fuel