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Discussion Starter · #1 ·
Does anyone here know how many CFM's a L28 pulls at idle M/T. My brother and I are trying to get his Holley 390 set up, we need to know this to get the right powervalve. It has a 8.5 in it right now which is too much, That means it would have to be pulling 17 CFM at idle! Any help would be appreciated.
 

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I doubt any of us is gonna know that right off the top of our heads. There's probably a simple equation somewhere to determine this, but I personally have no idea. A lot of it is going to depend on your altitude and volumetric efficiency at idle.
 

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Discussion Starter · #3 ·
Heck I'm having a hard time finding someone that has a flow meter for a carb. I,ve got friends with the webber flow meters but not standard carb meters? I'll keep trying thanks.
 
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