Originally posted by GoppelDanger:
The 2.5 Contour manifold is volume sized for 2.5L intake pulses. Plus, the dual runners are set up for secondaries. Do you have secondaries?
2.5L intake is going to give you nothing but wasted time and a big heat sink.
1st part of that is true, designed for 2.5 with secondaries, the second statement is not true, it will not be a big heat sink. Of the two available options looking from intake valves to TB the spilt port will flow MORE air then the ovals period. Is either one optimal probably not, will it show up as a restrition on the dyno on the way to 700hp maybe, maybe not, however I guarentee he will make more power with the SVT intake manifold versus the oval. You should see how much material is removed from the oval heads to make them into a split port, its gross how bottled up the oval ports are from the factory. If Gabe runs into a restriction at least he has the heads worked to allow for the larger better flowing split port intake runners, he can then have a custom manifold made that would be optimal for a TC set up eliminating the bends, increasing volume etc....but we only have two options available at the time and he choose the best way available.
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