what cfm's does a 5.3 pull?

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Mar 14, 2007 | 05:58 PM

tweeder

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From: Kitimat B.C.

what cfm's does a 5.3 pull?

Im trying to find out how many cfm's a stock 5.3 will pull into it a sI think my supercharger might be too small.

Mar 14, 2007 | 10:07 PM

ricoc

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From: PG BC CDN

1 cf = 12x12x12 ci = 1728 ci

5.3 = 325 ci

325ci x 6500 rpm/2 = 1056250 ci/min = 611 cfm

that's at 100% efficiency, which no NA engine is.

say 90% nets 550cfm

confirmations?

Mar 14, 2007 | 10:26 PM

DamnYankee

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From: Mesquite, TX

Quote:

Originally Posted by ricoc

1 cf = 12x12x12 ci = 1728 ci

5.3 = 325 ci

325ci x 6500 rpm/2 = 1056250 ci/min = 611 cfm

that's at 100% efficiency, which no NA engine is.

say 90% nets 550cfm

confirmations?

Which, as a side point, is I believe right about what the stock catalytic converters flow (580 CFM if I remember correctly) meaning upgrading to hi-flows would be a waste of money in many cases...