Quote:
Originally Posted by Barnstorm
3258 and 3259 AFB's were the same carbs that was used on the 413 380/385 hp. We've thought they were rated at 525cfm.
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On my flow bench my 3258 and 59 were 445 and 450 CFM. 6x3447s I tested were between 597 and 600. 4x3705s were between 696 and 700. An old 3310-1 780 Holley was 788 and a 4780 800 DP was 780. 340-383 AVSs were 625-630ish. 63 383 AFB was 566CFM.