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Discussion Starter · #1 ·
I have a LM-2 on my cousins 396 70 Chevelle and i have a good a/f all except for decel. WOT is 12.8,cruise is 13.5(a little rich),idle is 14.5 but on decel its low 12's for about 2 seconds and there is a smell of raw fuel. Any ideas?
4779 750 Holley, stealth intake, and factory cowl induction.
Thanks
 

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High vacuum with throttle blades closed = extra fuel on decel. This is one of the many drawbacks of a carburetor vs. electronic controls. In OEM situations fuel is leaned out or shut off completely during decelleration to increase fuel economy. Carbs always work the opposite way.
 
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