Thread: comment needed to build a 454

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it all has to do with RPM i have used rect ports on the street closed and open chamber and i have ran the big O ports they both work. for small cid to396 -469 with the right cam and intake the Oports work very good . what you have to think of is what rpm do i want to run ? if for the street i would go to the o ports the engine will not just drop the car in the 11s it is much more than a engine but a marriage of parts that work good together . it helps if you can hook it up .this i know all to well