100 cfm more with anular and downleg boosters can't beat AFR

Got it. Thanks. I’ve heard they do reduce flow quite a bit. But I have no data to support that. If you’re interested I have a 3310-6 center here with no choke horn and radiused entries I could send you for testing. It just came off my big block for a CSU blow through. I’ll send it to you if you’d like. Just send it back when you’re done and post the data.
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Thanks, but Gosh no! At one time I had good access to a chassis dyno, but not now. I don't know if Atco will be open this year but sitting around all night for maybe 2 runs is not effective testing. Nor is it much fun. :( After three hours waiting I got a run. If I stayed I might have got another before closing - or maybe not. I was told Friday nights were even more crowded. I'll try Cecil or Maple Grove this year even though they are further drive.

I *think* Mark W has posted some flow restriction info on one of the forums he frequents. He has been able to do a lot of testing and measuring.