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455 Dyno Results
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10-11-2021, 12:00 PM
Jay S
Ultimate Warrior
Join Date: May 2018
Location: Nebraska City, Nebraska
Posts: 1,709
FWIW…Here are one of my friends 614 bone stock flow numbers with the stock original valve job. I think they likely vary more than the d ports though. It has been said there are some 250 cfm bone stock ra4 heads around.
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