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Old 12-07-2012, 12:16 PM   #1
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Default ls 403 stroker

What size fuel injectors should I use for a ls 403 stroker motor?
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Old 12-07-2012, 12:43 PM   #2
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What cam? What heads? What intake? What exhaust? What compression ratio?
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Old 12-07-2012, 04:41 PM   #3
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what do you think or does your engine builder (or you in this case) think the power will be, HP? I'm also going to guess that you are staying naturally aspirated?

I'm going to shoot in the dark and for a 403 naturally aspirated say 50# to 60# and you will have some breathing room.

for a 403 boosted, I would grab 850cc or 1000cc injectors (80# and 95# respectively)

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Old 12-10-2012, 11:24 AM   #4
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Quote:
Originally Posted by bww3588 View Post
What cam? What heads? What intake? What exhaust? What compression ratio?
Bullet racing cam
intake 235 exhaust 240
11 to1
heads are ls3 heads
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Old 12-11-2012, 07:48 PM   #5
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I ran 42 lb / hr injectors on my old ls2 403 setup and it made 500 rwhp. I would venture to guess that 42-50 lb/hr injectors would be right about where you need to be for an NA application.
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