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whats a good range for the air fuel ratio

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Old 03-03-2011, 12:32 AM   #1
jtearp
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Default whats a good range for the air fuel ratio

What is an acceptable range for the air fuel ratio?
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Old 03-03-2011, 01:18 AM   #2
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What is an acceptable range for the air fuel ratio?
I assume your talking at WOT? What is the engine set up and what type of fuel?
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Old 03-03-2011, 01:22 AM   #3
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Frans96ss - yes I mean at WOT. Stock bottom end with the following:
cam - 248/260 .658/.660 114
ported heads
fast 102 intake
ported throttle body
1 7/8 long tubes with high flow cats
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Old 03-03-2011, 01:26 AM   #4
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i think its suppose to be 12.1 WOT and 14.9 Idle
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Old 03-03-2011, 08:54 AM   #5
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generally at wot a good a/f is 12.9-13.1. From what I seen, the LS7 seems to like 12.5-12.6
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Old 03-03-2011, 11:53 AM   #6
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12.2-12.8. Some cars like it richer, some leaner. Mine is dialed in around 12.6.
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Old 03-03-2011, 12:05 PM   #7
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Quote:
Originally Posted by jtearp View Post
Frans96ss - yes I mean at WOT. Stock bottom end with the following:
cam - 248/260 .658/.660 114
ported heads
fast 102 intake
ported throttle body
1 7/8 long tubes with high flow cats
I prefer to keep the LS7 stuff around 12.5
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Old 03-03-2011, 12:06 PM   #8
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Also depends on where you are measuring the a/f at. If measuring from a w/b 02 bung in the header, I always shoot for ~12.5ish. I do favor conservatism in my tuning though.
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