Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec throttle body question??

Originally posted by warmonger:

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Originally posted by Big Jim:

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In the roughest of terms, the 3.0 has 20% more displacement than a 2.5. Assuming that it can use 20% more air, the math would be simple. A throttle body with 20% more area would be between 65 and 66 mm.

With a hotter cam, head porting, larger exhaust, and no restriction from the MAF, a larger throttle body may be more optimal.

With stock exhaust, milder cams, etc, a smaller throttle body may be optimal.

Other factors may also change the results.

As I started to say, in the simplest of terms, a 65 mm throttle body would be a good place to start with a 3.0 with SVT cams. With Escape cams, the 60 mm would be a good palce to start.

You would need a set of cams hotter than the SVT cams to even thk about a 70 mm throttle body.

My $.02.

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You mean like a 3L turbo capable of swallowing 500 cubic feet per minute...if not a bit more 7-8psi?

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