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Dual Ports are very sensitive to pump shot

January 22 2012 at 6:21 PM

Roo  (Login TwoTab)
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from IP address 71.17.222.103


Response to 290 green pump cam

going with more shot or bigger shooters can make the stumble worse. try the pink cam, it may shoot more volume, but it is stretched out over more throttle opening. If it still isn't right, try a smaller shooter. This goes against all other intake advice, because of the small plenum and runner volume of the Dual Port. This was about 12 years ago when I tuned a 351 4v.

 
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