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flp 1 3/4 vs kooks 1 7/8 on a 408?

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Old 03-23-2007, 10:31 AM
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Default flp 1 3/4 vs kooks 1 7/8 on a 408?

I have been told that someone actually gained close to 50rwhp from doing this swap! Has anyone else had similar #'s? I have the flp's right now and dont' want to leave that much power on the table!
Old 03-23-2007, 10:33 AM
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If that were true nobody would be running the smaller primaries..

IF you dont already have the FLPs then get the kooks for the 408.

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Old 03-23-2007, 11:41 AM
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i could see a nice gain happening on larger cubed motors. large motors need flow
Old 03-23-2007, 12:33 PM
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I call BS. There's nothing wrong with FLPs. I would say try adding 3" true duals first. If you still think you have a restriction, then get the kooks
Old 03-23-2007, 02:07 PM
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If you haven't bought them yet, and you are putting it on a 408, def go 1 7/8th. The bigger cubes can utilize the larger primaries without sacrificing tq.




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