Cfm
Hotshot
Joined: May 2004
Posts: 12,170
Likes: 5
From: The hills of No. Calif.
I was hoping somebody would jump in here with an answer for you on this. With EFI engines it seems you never hear about CFM ratings anymore, it's always about port volume and throttle body size, etc. Maybe we just don't have anyone here who knows...
(How's that for a challenge?!)
(How's that for a challenge?!)
Elder User
Joined: Jan 2006
Posts: 544
Likes: 0
Originally Posted by EgoMan
So are you guys saying that 500cfm is a conservative estimate? That maybe one would use to judge the system?
Post Fiend
Joined: Nov 2001
Posts: 14,947
Likes: 6
From: Topsfield, MA
Originally Posted by DaveBowman
Yes, thats about how much air the engine will move at redline. But the stock throtle body will flow over 1000 cfm's
The stock dual blade throttle bodies are not very good. A single 65mm TB will outflow a dual 45mm TB, surprisingly.
I remember Stacey David from Trucks! do a 600 something cubic inch hemi pushing 850hp that had a 4 bbl throttle body flowing 1200-1300 CFM. I don't see the stock TB living up to that...fill me in please
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