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Old 05-16-2015, 08:07 AM
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steve25 steve25 is offline
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x2 with Paul!
I have worked on a number of these and if the motor you will run this on is of 440 cid or larger and the heads have had the intake runner at the flange sized up to the RAiV gasket size and or the heads flow more than 260 cfm you will need to increase the runner expansion rate from what it is stock at the manifold flange all the way into the Plenum!
This is a ton of work if you want the most from this manifold and if you have the hood clearance and you are not heart set on this manifold a Victor would be far and away the thing to run!

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