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Carb CFM Requirements Formula

Forum: C3 Engines, Driveline and Handling

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Carb CFM Requirements Formula

Posted: 6/29/05 7:49amMessage 1 of 3
j
Former Member
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Joined: 7/12/2004
Posts: 38

I was doiing a reality check on my Q-Jet and here is a formula I found that defines the Carb CFM requirements by CID and desired RPM.

CORRECTED HERE!

Engine CID X Max RPM / 3456 CFM
350 6,000 2,100,000 608
355 6,000 2,130,000 616
383 6,000 2,298,000 665
       
350 6,500 2,275,000 658
355 6,500 2,307,500 668
383 6,500 2,489,500 720

Engine CID X Max RPM / 3466 = CFM
350 6,000 2,100,000 606
355 6,000 2,130,000 615
383 6,000 2,298,000 663
   
350 6,500 2,275,000 656
355 6,500 2,307,500 666
383 6,500 2,489,500 718

OLD NUMBERS HERE.. COULDN'T CUT IT OUT???

jackmoore38532.8379513889
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Carb CFM Requirements Formula

Posted: 6/29/05 10:28amMessage 2 of 3
A
Former Member
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Portland, TN - USA
Joined: 4/29/2003
Posts: 805
Vette(s): 1972 Coupe Anything, but Stock and more mods to come! SSBC Force 10 Brakes, 3.73, TH350, 355 CID, Rack and Pinion, Vette Brakes suspension front and rear.
 the divisional number is actually 3456, not 3466.  You should refigure.
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Carb CFM Requirements Formula

Posted: 6/29/05 8:08pmMessage 3 of 3
j
Former Member
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Joined: 7/12/2004
Posts: 38

Thanks After Shark.  Always good to have someone checking the numbers.  It wasn't a big difference, but let's get it right.  Thanks, Jack

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