FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: sixty9cobra on June 23, 2025, 12:30:43 PM
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Can someone please tell me intake and exhaust valve sizes for Barrys CNC ported Edelbrock stage x heads. I sending my carb to Pro Systems to be rebuilt. I cant seem to find it on Barrys website. Thanks Second question is 850 big enough or should I go 950? Harry
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Harry, a Holley 950 is basically a 750 with an 850 base plate. It is a marketing gimmick, it does not flow 950 cfm. Also, an 850 carb is a race calibrated carb from Holley; not a great street carb. Now, I don't know about Pro Systems and what they do, and maybe they have a real 950 cfm carb, but if I were you I'd be looking at one of the Holley 1000 HP carbs. I don't think they flow 1000 cfm either, but from personal experience I know that they are good on 600-650 HP engines - Jay