CFM, and delta P
Thread Starter
Racer
Joined: May 2010
Posts: 300
Likes: 1
From: rochester new york
CFM, and delta P
I am looking to can the stock air filter, in anticipation of a cam change for a 6 speed
looking to go to a strong street cam, say 294 duration
what are the Stock LS-1 requirements as to CFM @ specific PD ..??
looking to go to a strong street cam, say 294 duration
what are the Stock LS-1 requirements as to CFM @ specific PD ..??
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
The max CFM a NA motor can flow is it's displacement at red line with 100% VE. Do the calculation and see what it comes out to be.
Last edited by ZeeOSix; Aug 17, 2010 at 07:28 PM.
Thread Starter
Racer
Joined: May 2010
Posts: 300
Likes: 1
From: rochester new york
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
And exactly where do you think this max pressure drop is happening and when?
What are you trying to figure out? Like I said before, the worst case max CFM is the engine's displacement at redline with 100% VE. Most NA engines can't actually achieve 100% VE, but some come close.
Last edited by ZeeOSix; Aug 18, 2010 at 01:41 AM.
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
he is looking at duration @ .00 and most today use duration @ .050 so it looks a lot bigger. 294 @ .050 would not work at all on the street. It would rough idle at 1600 RPMs, lol. my race car has a 28x/29x @ .050 with a 102 LSA in a 327. it never idles though. and it's a carb.
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